Solve.The cost in tens of thousands of dollars of removing x percent of a contaminant from a lake after an accidental chemical spill is given by the algebraic expression 
. Find the cost of removing 85 percent of the chemical from the lake.
A. $1,020,000
B. $6,800,000
C. $12,000
D. $680
Answer: B
Mathematics
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A. -cos x B. -sin x C. sin x D. cos x
Mathematics
Complete the exercises using counting techniques. A local department store sold carpets in 3 sizes. Each carpet came in 2 qualities. One size of carpet came in 5 colors. The other sizes came in 3 colors. How many choices of carpet were there?
A. 22 B. 28 C. 30 D. 27
Mathematics
Find the indicated term of the arithmetic sequence.Given an arithmetic sequence with d = 6 and a5 = 27, find a20.
A. 54 B. 119 C. 117 D. 59
Mathematics
Solve.16x2 + 64y2 = 10248y + 4x = 32
A. (0, -8), (0, -4) B. (0, 8), (4, 0) C. (0, 4), (8,0) D. (0, -4), (-8, 0)
Mathematics