Solve.David has $20,000 to invest. He invests $15,000 in a mutual fund that pays 12% annual simple interest. If he wants to make at least $2200 in yearly interest, at what minimum rate does the remainder of the money need to be invested?
A. 7%
B. 8%
C. 6%
D. 10%
Answer: B
Mathematics
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Find the vertices of the hyperbola.9x2 - 36y2 + 18x + 144y - 459 = 0
A. (1, 1) and (1, -5) B. (-7, 2) and (5, 2) C. (-1, 5) and (-1, -1) D. (-5, -2) and (7, -2)
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Use the square root method to solve the equation. 7z2 + 2 = 849
A. 11 B. 424.5 C. ±11 D. ±12
Mathematics
Solve the problem. Round rates to the nearest tenth of a percent and dollar amounts to the nearest cent.A local dealer sells baseballs for $25 each. If $21.77 is the cost, what is the percent of markup on the cost?
A. 147.1% B. 14.8% C. 87.1% D. 12.9%
Mathematics
Solve the equation on the interval [0, 2?).tan x + sec x = 1
A. 0
B. No solution
C. 
D. 
Mathematics