Combine like terms. Then write the polynomial in descending order of powers.-5m9 + 7m7 - 8m5 + 7m9 - 14m7
A. Cannot be simplified
B. 357m
C. 2m9 - 7m7 - 8m5
D. 17m21
Answer: C
Mathematics
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Solve the problem.Suppose that the dollar cost of producing x radios is 
Find the marginal cost when 50 radios are produced.
A. $60 B. $20 C. $2,300 D. -$2,300
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Use a graphing calculator to find the sum.
Round your answer to three decimal places.
A. 0.917 B. 1.100 C. 0.091 D. 0.063
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Simplify the expression. Assume that all variables are positive when they appear.12
? 3
A. 36
B. 15
C. 36
D. 36
? 
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The pair of figures is similar. Find the missing side n. Round to the nearest tenth when necessary.
A. n = 1.2 cm B. n = 13.6 cm C. n = 340 cm D. n = 21.3 cm
Mathematics