Multiply. Express the answer as a single polynomial in standard form.(x + 7)(9x2 + 8x + 4)
A. 9x3 + 63x2 + 56x + 28
B. 72x3 + 64x2 + 32x
C. 9x3 + 71x2 + 60x + 28
D. 504x4 + 9x3 + 224x2 + 28
Answer: C
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Find the work done by F over the curve in the direction of increasing t.F = 
i + 
j + 
k; C: r(t) = t8i + t6j + t5k, 0 ? t ? 1
A. W = 1
B. W = 19
C. W = 
D. W = 0
?Find the mean and median of 
.
?
A. ?mean: 24.00median: 24.00 B. ?mean: 24.00median: 0.17 C. ?mean: 4.00median: 0.50 D. ?mean: 6.00median: 6.00 E. ?mean: 0.50median: 0.50
Multiply.(z + 2)(z + 9)
A. 2z2 + 18 B. 2z + 18 C. z2 + 11z + 11 D. z2 + 11z + 18
Use the circle graph to solve the problem.A survey of the 9489 vehicles on the campus of State University yielded the following circle graph. 
Find the number of motorcycles. Round your result to the nearest whole number.
A. 8540 B. 10 C. 1423 D. 949