Solve.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is cost and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 31 watches
B. 40 watches
C. 39 watches
D. 79 watches
Answer: A
Mathematics
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Solve the problem.The work W (in joules) done by a force F (in newtons) moving an object through a distance x (in meters) is given by 
Find a formula for W, if 
and k is a constant.
A. W = k + C
B. W = 
+ C
C. W = 
+ C
D. W = kx2 + C
Mathematics
Provide an appropriate response.Solve the system of equations: 3x - y = -2 x + 3y = 6
Fill in the blank(s) with the appropriate word(s).
Mathematics
Write the expression in the standard form a + bi.(1 + i)3
A. -2 + i B. 2 + 2i C. -2 - 2i D. -2 + 2i
Mathematics
Solve for the indicated variable.A = w (
) for w
A. w = 
B. w = 
C. w = 
D. w = 
Mathematics