Provide an appropriate response.Finish the statement with a correct response. To divide two fractions one needs to:
A. Use the reciprocal of the second fraction (divisor), add the numerators and multiply the denominators.
B. Use the reciprocal of the second fraction (divisor) and multiply.
C. Add the numerators and multiply the denominators.
D. Add the numerators and factor the denominators.
Answer: B
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Evaluate the improper integral or state that it is divergent.
A. 
B. - 
C. -4?
D. 0
Solve.The length L of wire (in feet) that would have resistance R (in ohms) is given by 
where d is the diameter of the wire in thousandths of an inch (or mils) and K is the specific resistance of the material.(a) Solve this formula for R. (b) Substitute 
for R in your answer to part (a) and then solve for d. (c) Use your answer to part (b) to find the diameter of copper wire (K = 10.4 ohms) 1480 ft long if the current I is 12.0 amperes and the voltage drop E is 10.0 volts. (Round to the nearest whole number.)
A. (a) R = 
,
(b) d = 
,
(c) 128 mils
B. (a) R = 
,
(b) d = 
,
(c) 136 mils
C. (a) R = 
,
(b) d = 
,
(c) 18,470 mils
D. (a) R = 
,
(b) d = 
,
(c) 18,630 mils
Solve the problem.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 40 watches B. 25 watches C. 36 watches D. 50 watches
Evaluate the algebraic expression for the given values of the variables.
for a = 32 and b = 24
A. 56 B. 28 C. 35 D. 7