Write an equation of the line.
A. y = 9x
B. x = 9
C. y = x + 9
D. y = 9
Answer: B
Mathematics
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Solve the problem. Round your answer, if appropriate.The volume of a sphere is increasing at a rate of 5 cm3/sec. Find the rate of change of its surface area when its volume is 
cm3. (Do not round your answer.)
A. 
cm2/sec
B. 
cm2/sec
C. 
cm2/sec
D. 10? cm2/sec
Mathematics
The figure shows the velocity v or position s of a body moving along a coordinate line as a function of time t . Use the figure to answer the question. v (ft/sec)
What is the body's acceleration when t = 8 sec?
A. -2 ft/sec2 B. 1.67 ft/sec2 C. 1 ft/sec2 D. 0 ft/sec2
Mathematics
Find the perimeter.
A. 449 mi B. 373 mi C. 302 mi D. 393 mi
Mathematics
Divide. Write with positive exponents.
A. 3x2 - 6 + 
B. 3x - 6 + 
C. 3x - 6 + 
D. 3x2 - 6 + 
Mathematics