Convert the units using unit fractions.7 ft = 
in.
A. 28
B. 252
C. 21
D. 84
Answer: D
Mathematics
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Estimate the slope of the curve at the indicated point.
A. 0 B. Undefined C. -1 D. 1
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Solve the problem.Stephanie receives a salary of $650 per month plus a commission of 5.5% on the first $3,000 of sales, and 7% of all sales over $3,000. Find Stephanie's gross pay for the month if her sales were $9,880.
A. $1,506.60 B. $2,781.60 C. $1,296.60 D. $646.60
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Evaluate the integral.
A. 4? B. 5? C. 9? D. 8?
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Graph the system of inequalities.y ? -x2y ? x + 1y ? -5x ? -4
A. 
B. 
C. 
D. 
Mathematics