Solve the problem.It takes 
seconds for an object to fall from a height of 50 feet to a height of h feet above the ground. From this height, how much longer does it take for an object to drop to a height of 12 feet above the ground than to drop to a height of 42 feet above the ground?
A. 
sec
B. 
sec
C. 
sec
D. 
sec
Answer: D
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Name the set using the roster method.The set of even numbers between 5 and 9
A. ? B. {5, 6, 7, 8, 9} C. {6, 7, 8} D. {6, 8}
Solve the system by the elimination method. 7x + 8y = 67 3x + 6y = 39
A. {(4, 5)} B. {(5, 5)} C. {(5, 4)} D. ?
Solve the problem.The gas mileage, m, of a compact car is a linear function of the speed, s, at which the car is driven, for 
For example, from the graph we see that the gas mileage for the compact car is 45 miles per gallon if the car is driven at a speed of 
Find and interpret the average rate of change in gas mileage between speeds of 40 mph and 90 mph.
A. -0.75 miles per gallon/mph; Between speeds of 40 mph and 90 mph, gas mileage decreases at a rate of 0.75 miles per gallon for each 1 mph increase in speed. B. -0.5 miles per gallon/mph; Between speeds of 40 and 90 mph, speed decreases at a rate of 0.5 miles per hour for each 1 mpg increase in gas mileage. C. -0.5 miles per gallon/mph; Between speeds of 40 mph and 90 mph, gas mileage decreases at a rate of 0.5 miles per gallon for each 1 mph increase in speed. D. 0.5 miles per gallon/mph; Between speeds of 40 and 90 mph, gas mileage increases at a rate of 0.5 miles per gallon for each 1 mph increase in speed.
Establish the identity.
= 
What will be an ideal response?