Solve the problem.The profit (in thousands of dollars) that a company earns from producing x tons of brass and y tons of steel can be approximated by 
Find the amount of brass and steel that maximize profit and find the value of the maximum profit.
A. 
tons of brass and 
tons of steel; maximum profit is $157,977
B. 3 tons of brass and 6 tons of steel; maximum profit is $216,000
C. 
tons of brass and 
tons of steel; maximum profit is $118,833
D. 6 tons of brass and 3 tons of steel; maximum profit is $216,000
Answer: B
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Find the interval of convergence of the series. Select the correct answer.
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If the number is negative, write it with a raised negative sign; if the number is positive, write it in two ways.The temperature was 89.2 degrees below zero.
A. 
degrees or 89.2 degrees
B. 
degrees
C. 
degrees
D. 89.2 degrees
Factor the expression completely. If the polynomial is prime, state this as your answer.
x2 + 4x + 16
A. 
2
B. 
2
C. prime
D. 
A rectangular garden is to be fenced in and divided into three parallel sections. The fencing for the boundary costs $20 per foot whereas the fencing for the dividing fences costs $5 per foot. Consider the problem of finding the dimensions of the largest garden possible if the gardener can spend $2000 for the fencing. Find the values of l and w for which the total area of the garden is as large as possible. 
Fill in the blank(s) with the appropriate word(s).