Solve.The area of a circle varies directly as the square of the radius. What happens to the area if the radius is doubled?
A. The area is multiplied by 4.
B. The area is halved.
C. The area is multiplied by 
.
D. The area is doubled.
Answer: A
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Solve the problem.It took 1950 J of work to stretch a spring from its natural length of 1 m to a length of 
. Find the spring's force constant.
A. 1462.5 N/m B. 487.5 N/m C. 3900 N/m D. 975 N/m
Convert the number to decimal form.22five
A. 60 B. 20 C. 110 D. 12
A car accelerates in a westerly direction from a yield sign to a constant speed on the freeway. It then exits the freeway and parks. Measure the location of the car as its distance west of the yield sign. Make a graph of velocity. Be sure to label you graph appropriately. ? ? ? ? .
What will be an ideal response?
Solve for the angle ?, where 0 ? ? ? 2?cos2? = 
A. ? = 0, ?, 2?
B. ? = 
, 
, 
, 
C. ? = 
, 
, 
, 
D. ? = 
, 
, 
, 