Use the quotient rule to find the derivative.y = 
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: B
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Find the square roots of the following number.
A. 
, - 
B. 
, - 
C. 
, - 
D. 
, - 
Solve the problem.A merchant has coffee worth $40 a pound that she wishes to mix with 30 pounds of coffee worth $90 a pound to get a mixture that can be sold for $70 a pound. How many pounds of the $40 coffee should be used?
A. 10 lb B. 50 lb C. 20 lb D. 25 lb
Evaluate the derivative of the given function for the given value of x.y = x2
, x = 2
A. 
B. 
C. 
D. 
Solve the problem.Big Jack's pizzas are the best values in town. His guarantee is that if you buy 5 pizzas, he'll take src="https://sciemce.com/media/4/ppg__tttt0613191115__f1q119g5.jpg" alt="" style="vertical-align: -4.0px;" /> round and the original price was 
off the sixth, 
off the seventh, and 
off of every pizza after that. On Friday night Elmer's fraternity ordered 8 pizzas for their party. What was the price per square inch on the 
pizza if each pizza was a(n) 
(Use 3.14 for ?.)
A. $0.07 per square inch
B. $0.15 per square inch
C. $0.10 per square inch
D. $0.05 per square inch