1. The kinetic energy of a car can be described by the function KE = ½mv2, in which the constant m is the mass of the car and v is the car’s velocity. If the velocity keeps increasing, the kinetic energy will –
A
remain constant
B
continually increase
C
increase and the become constant
D
decrease to zero
2. The graph below represents Lynne’s car trip from her house to the mall and then back to her house. If each section of the graph represents part of Lynne’s trip, which part of the trip took the least amount of time?
A
r
B
p
C
q
D
s
3. Which graph best represents the relationship between the height of a burning candle and the amount of time that passes as the candle burns?
4. Which is always a correct conclusion about the quantities in the function y = x +4?
A
The variable x is always 4 more than y.
B
When the value of x is negative, the value of y is also negative.
C
The variable y is always greater than x.
D
As the value of x increases, the value of y decreases
5. Mr. Wilson asked his class to sketch a graph that would represent the following activity: “Start 3 meters away from me and slowly walk away for 8 seconds. Then stand still for 3 seconds and walk quickly toward me for 4 seconds.� Which graph best represents this activity?
6. The graph below represents Cheyenne’s bicycle trip from her house to a friend’s house. On which segment of the graph does it appear that Cheyenne was riding her bicycle at the slowest pace?
A
r
B
s
C
t
D
u
7. The graph below represents which of the following relationships between temperature and time? A B
C D
Oven temperature while a cake is baking Temperature of water that is heated on a stove, removed, and then allowed to cool Temperature of a container of hot tea after placing several cubes of ice in it Room temperature of a gym after the air conditioner is turned on
8. Jake studied the parabola shown below. Which is an accurate conclusion that Jake could make about this parabola? A
The vertex is at (-2, 0).
B
The minimum value is at (0, -4).
C
The maximum value is at (2, 0). The y – intercept is at (0,0).
D
Vertex
9. The graph below shows John’s weekly earnings as a function of his total weekly merchandise sales. Which is closest to John’s total earnings if he sells $650 of merchandise in one week?
A
$220
B
$260
C
$240
D
$250
10. The graph below shows the number of light bulbs in thousands that the Electric Lightbulb Company sold from 1998 to 2001. If the trend shown on the graph continues, in what year can the Electric Lightbulb Company first expect to sell more than 1.3 million light bulbs?
A
2010
B
2008
C
2009
D
2011
11. According to the data shown below, which would be the best prediction of the number of passengers at the International Jetport for the year 2008?
A
70.1 million
B
68.5 million
C
74.8 million
D
78.0 million
12. The total cost, c, of leasing a car can be expressed by the equation c = 1800 + 185m, where m is the number of months the car is leased. Which statement is true based on the information given? F G H J
The car must be leased for at least 60 months. The total cost of leasing this car for 1 year is more than $4000. The total cost of leasing this car for 2 years is $4020. The cost of leasing this car is greater than the cost of buying one.
13. The payroll clerk at an appliance store calculates each salesclerk’s weekly salary using the function f(x) = 75 + 0.10x, where x is each salesclerk’s total weekly sales. The best interpretation of this situation is that each salesclerk is paid – F
$75 plus a 10% commission on the total weekly sales of all the salesclerks
G
$75 plus a 10% commission on his or her weekly sales
H
$75 plus a 10% commission on the total weekly profit for the store
J
the same amount regardless of his or her total weekly sales
14. The owner of a candle store purchases his candles from a local distributor. The graph below shows the relationship between n, the number of candles ordered, and c, the total cost of the candle order. Which conclusion can be drawn about this relationship?
A
An order of 50 candles will cost less than $20.
B
An order of 100 candles will cost more than $60.
C
An order of 150 candles will cost less than $70.
D
An order of 200 candles will cost more than $90.
15. Karen jogs at a steady pace up a hill in her neighborhood. She then runs down the hill, and her speed increases. Which graph best describes this situation?
16. The net profit, p, that a company makes from the production of widgets is represented by the equation p = 2.5n – 25,000, where n is the number of widgets the company sells. Which is the best interpretation of this information? A
The company has made a profit of $25,000.
B
The company needs to sell more than 10,000 widgets before it makes a profit.
C
The company’s profit needs to be more than $25,000.
D
The company has sold more than 10,000 of its widgets.
17. Gina did a research project on how age affects sleep patterns. She concluded that as people age, they sleep fewer hours until a point in adulthood when the number of hours remains constant. Gina also found that after the age of 70 the amount of time spent sleeping increases slightly. Which graph best shows the results of Gina’s research?