Evaluate the expression if it is a real number.
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A) –16 B) 4 C) –4 D) Not a real number
D) Not a real number
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Find the potential function f for the field F.F = (ey2 - sin x)i + 2xyey2j + k
A. f(x, y, z) = cos x + ey2 + z + C B. f(x, y, z) = cos x + xzey2 + C C. f(x, y, z) = cos x + ey2(x + z) + C D. f(x, y, z) = cos x + xey2 + z + C
Identify the number represented on the abacus.
A. 99,999 B. 66,666 C. 55,555 D. 11,111
Factor completely. If the polynomial cannot be factored, write "prime."11x6 - x5 - 11x + 1
A. (x5 - 1)(11x - 1) B. (x5 + 1)(11x + 1) C. (x5 - 1)(11x + 1) D. (x5 + 1)(11x - 1)
Solve the problem.To remodel a bathroom, a contractor charges $30 per hour plus material costs, which amount to $4800. Therefore, the total cost to remodel the bathroom is given by 
where x is the number of hours the contractor works. Find a formula for 
What does 
compute?
A. f -1(x) = 
- 4800; This computes the total cost if the contractor works x hours.
B. f -1(x) = 
- 160; This computes the number of hours worked if the total cost is x dollars.
C. f -1(x) = 
- 160; This computes the total cost if the contractor works x hours.
D. f -1(x) = 
- 4800; This computes the number of hours worked if the total cost is x dollars.