Solve the problem.Anne and Nancy use a metal alloy that is 17.25% copper to make jewelry. How many ounces of a 15% alloy must be mixed with a 21% alloy to form 120 ounces of the desired alloy?
A. 45 oz
B. 75 oz
C. 50 oz
D. 77 oz
Answer: B
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Solve the equation.4x = 29(Round to the nearest hundredth.)
A. {0.41} B. {2.98} C. {2.43} D. {7.25}
Solve the problem.Patricia took out a loan for for an expensive sports car. The total interest for the 36 month loan was $23,090. Find the interest which will be refunded if she pays the loan in full with 4 payments remaining.
A. $219.90 B. $346.70 C. $366.51 D. $208.02
Give the interval where the function increases or decreases, as requested.f(x) = (x - 1)2 - 1decreases
A. [0,1] B. [-1,?) C. [-1,0] D. (-?,1)
Solve.A census was taken to determine the median annual income for residents of a selected region of the United States, by level of education. The given polynomial models describe the median annual income for men, M, and for women, W, who have completed x years of education. Shown in a rectangular coordinate system are the graphs of the polynomial models. Identify the median annual income for a man with 16 years of education as a point on the appropriate graph.M = 224x2 - 1266x + 20,106W = 287x2 - 4030x + 33,761
A. (16, 76,184) B. (16, 57,194) C. (16, 103,203) D. (16, 42,753)