Find the derivative of the function at the specified point.f(x) = 
at x = -1
A. 8
B. -8
C. 4
D. 0
Answer: B
Mathematics
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Find the exact value of the real number y.y = sec-1 (
)
A. 
B. 
C. 
D. 
Mathematics
The pair of figures is similar. Find the missing side n. Round to the nearest tenth when necessary.
A. n = 5.7 mi B. n = 693 mi C. n = 14.1 mi D. n = 8.6 mi
Mathematics
Factor the polynomial completely.21t4 - 91t3 - 70t2
A. 7t2(3t - 2)(t + 5) B. (21t3 + 14t)(t - 5) C. t2(3t + 2)(7t - 35) D. 7t2(3t + 2)(t - 5)
Mathematics
Mentally estimate the sum by rounding each number to the first digit. 
A. 230 B. 240 C. 200 D. 232
Mathematics