Factor.27y3 + 8z3
A. (3y + 2z)(9y2 - 6yz + 4z2)
B. (3y + 2z)(9y2 + 4z2)
C. (3y - 2z)(9y2 + 6yz + 4z2)
D. (27y + 2z)(y2 - 6yz + 4z2)
Answer: A
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Perform the indicated operation. Write the answer in scientific notation.
A. 7.6 × 10-2 B. 3.8 × 1010 C. 3.8 × 10-2 D. 7.6 × 1010
Factor, if possible.2a3 + 4a2 - 16a
A. 2a(a + 4)(a - 2) B. 2a(a - 4)(a + 2) C. 2a(a - 4)(a - 2) D. 2a(a + 4)(a + 2)
The figure shows the percentage of the U.S. population, f(x), made up of teachersas a function of time, x, where x is the number of years after 1900. Use the graph to solve the problem. 
Use the graph to estimate f(60).
A. 1% B. 3% C. 60% D. 2%
Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. 
local maximum; 
local minimum
B. 
saddle point; 
saddle point
C. 
local maximum
D. 
local minimum