Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.f(x) = x2 from x = 0 to x = 4; n = 4
A. 27
B. 33
C. 30
D. 36
Answer: C
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Solve the problem. Round to the nearest cent.Tech Support offers trade discounts of 10/20 and terms of 3/10, n/30 on its tool cases. Assuming a service department earns the cash discount, find the net cost of a tool case list-priced at $529.
A. $369.45 B. $380.88 C. $342.79 D. $359.19
Determine if the graph of the function is concave up or concave down.g(x) = (x - 3)2 + 2
A. Concave up B. Concave down
Solve the problem.Subtract (2xy2 + 4xy) from the difference between 
and 
A. -2x2y + 6xy2 - 7xy B. -2x2y - 6xy2 - 7xy C. -2x2y + 6xy2 + 1xy D. -4x2y - 4xy2 - 7xy
Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.(4x)0
A. 4 B. 1 C. 0 D. 4x