Solve the problem.Suppose that the speed of a car, measured in miles per hour (mph), is monitored for some short period of time after the driver applies the brakes. The following table and graph relate the speed of the car to the amount of time, measured in seconds (sec), elapsed from the moment that the brakes are applied. What is happening to the speed of the car during this time frame? In which of the time intervals does the speed change the most?
A. With increasing elapsed time, the speed increases. The speed changes most during the time interval from 2 seconds to 4 seconds.
B. With increasing elapsed time, the speed decreases. The speed changes most during the time interval from 2 seconds to 4 seconds.
C. With increasing elapsed time, the speed decreases. The speed changes most during the time interval from 8 seconds to 10 seconds.
D. With increasing elapsed time, the speed increases. The speed changes most during the time interval from 8 seconds to 10 seconds.
Answer: B
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Solve the problem.The number G of gears a machine can make varies directly as the time T it operates. If it can make 2706 gears in 14 hours, how many gears can it make in 3 hours?
A. 0.0155 gears B. 579.86 gears C. 2723 gears D. 193.29 gears
Provide an appropriate response.Write as an ordinary number: 6 × 10-2
A. 0.6 B. -120 C. 0.06 D. -600
Add. Do not use a number line except as a check.- 
+ 
A. - 
B. 
C. - 
D. 
For the given statement Pn, write the statements P1, Pk, and Pk+1.12 + 22 + 32 + . . . + n2 = 
What will be an ideal response?