Solve the problem.After 5 years, the balance, A, in an account with principal P and interest rate r compounded annually is given by the formula 
Simplify this formula by factoring.
A. A = P(1 + r)5r
B. A = (P + Pr)(1 + r)4
C. A = P(1 + Pr)(1 + r)4
D. A = P(1 + r)5
Answer: D
Mathematics
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Use the integral test to determine whether the series converges.
A. diverges B. converges
Mathematics
Solve the problem.Assume the total revenue from the sale of x items is given by 
while the total cost to produce x items is 
Find the approximate number of items that should be manufactured so that profit, 
is maximum.
A. 228 items B. 178 items C. 56 items D. 128 items
Mathematics
Solve the problem.How much pure acid should be mixed with 7 gallons of a 50% acid solution in order to get an 80% acid solution?
A. 10.5 gal B. 17.5 gal C. 28 gal D. 3.5 gal
Mathematics
Solve for the specified variable.S = 2?rh for h
A. h = S - 2?r
B. h = 2?rS
C. h = 
D. h = 
Mathematics