Solve using the principle of zero products.
= 0
A. - 
, 
B. 3, 3
C. 4, 
D. 
, - 
Answer: A
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Evaluate the integral.
ln 3x dx
A. 39.22 B. -18.26 C. 49.34 D. 40.23
Find the flux of the vector field F across the surface S in the indicated direction.F = xzi + yzj + k , S is the cap cut from the sphere x2 + y2 + z2 = 16 by the plane 
direction is outward
A. 
?
B. 255?
C. - 
?
D. 
?
An apple orchard has an average yield of 36 bushels of apples/tree if tree density is 21 trees/acre. For each unit increase in tree density, the yield decreases by 2 bushels. Letting x denote the number of trees beyond 21/acre, find a function in x that gives the yield of apples. ?
A. f(x) = (21 + x)(36 + 2x) B. f(x) = 2(21 + x)(36 - x) C. f(x) = 2(21 - x)(36 - 2x) D. f(x) = (21 - x)(36 + 2x) E. f(x) = (21 + x)(36 - 2x)
Find the length of the third side of the right triangle. Give an exact answer and, where appropriate, an approximation to three decimal places.
A. c = 
cm; c ? 12.806 cm
B. c = 
cm; c ? 6.000 cm
C. c = 
cm; c ? 11.489 cm
D. c = 18 cm