Find the product.10x4(-8x6 - 7x3)
A. -150x4
B. -150x10 - 150x7
C. -80x10 - 7x3
D. -80x10 - 70x7
Answer: D
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Solve the system. If there is an unlimited number of solutions, find one of them.x + y + z = 92x - 3y + 4z = 7x - 4y + 3z = -2
A. x = 9, y = 7, z = 2
B. x = 1, y = 1, z = 1
C. Unlimited: x = 
, y = 
, z = 0
D. Inconsistent
Use the standard normal curve table to find the closest z-score for the given condition.82.9% of the total area is to the left of z.
A. 0.95 B. -0.96 C. -0.95 D. 0.96
Evaluate the integral.
A. 
B. 
C. 
D. 
Solve the problem.The northern third of Indiana is a rectangle measuring 96 miles by 132 miles. Thus, let 
Assuming that the total annual snowfall (in inches), S(x,y), at 
is given by the function S(x,y) = 60e-0.001(2x + y) with (x,y) ? D, find the average snowfall on D.
A. 51.78 inches B. 52.44 inches C. 52.06 inches D. 51.14 inches