Solve.How can $42,000 be invested, part at 4% annual simple interest and the remainder at 10% annual simple interest, so that the interest earned by the two accounts is equal at the end of the year?
A. $20,000 invested at 4%; $22,000 invested at 10%
B. $30,000 invested at 4%; $12,000 invested at 10%
C. $12,000 invested at 4%; $30,000 invested at 10%
D. $22,000 invested at 4%; $20,000 invested at 10%
Answer: B
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Solve the problem by estimating.Andy wants to buy a refrigerator for $699, a stove for $759, and a dishwasher for $549. Round each cost to the nearest hundred to estimate the total cost.
A. $2000 B. $1800 C. $2100 D. $1900
Identify the intercepts.
A. (-2, 0), (0, 6) B. (-6, 0), (0, 6) C. (2, 0), (0, -6) D. (2, 0), (0, 6)
Convert the equation to polar coordinates.x2 + y2= 121
A. r = 11 B. r = 121 C. r = 11 sin ? D. r = 11 cos ?
Use a cubic or quartic regression (as specified) to fit a curve through the points given in the table. Round to the nearest hundredth.
(Cubic)
A. y ? 0.49x3 - 0.25x2 + 2.83x + 5.00 B. y ? 0.58x3 + 0.25x2 - 2.83x + 5.00 C. y ? 0.49x3 - 0.25x2 - 2.83x + 5.00 D. y ? 0.58x3 - 0.25x2 - 2.83x + 5.00