Given 
, find ?f / ?y
What will be an ideal response?
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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. 87 watches B. 20 watches C. 43 watches D. 50 watches
Solve the equation by applying the rules for rewriting equations.1 - 3x = 8x + 3
A. 
B. - 
C. - 
D. 
Solve the problem.Paul has $20,000 to invest. He puts x dollars in a safe government-insured certificate of deposit paying 5% per year. He invests the remainder of the money in noninsured corporate bonds paying 12% per year. His total interest earned at the end of the year is given by the algebraic expression 
Determine the amount of interest earned at the end of the year if he invests $6000 in the government-insured certificate of deposit.
A. $1782 B. $1980 C. $2820 D. $3420
The graph of a function is given. Use the graph to find the indicated limit and function value, or state that the limit or function value does not exist.a. 
f(x)
b. f(1)
A. a. 
f(x) = 0
b. f(1) = 0
B. a. 
f(x) does not exist
b. f(1) does not exist
C. a. 
f(x) = 1
b. f(1) = 3
D. a. 
f(x) = 3
b. f(1) = 3