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Which of the following expressions are equivalent to −3.5(2 − 3n) − 2.5n? A. −7 − 8n B. −7 + 8n C. −7 − 13n D. −7 − n(10.5 − 2.5) E. −7 + n(10.5 − 2.5)

Which of the following expressions are equivalent to −3.5(2 − 3n) − 2.5n? A. −7 − 8n B. −7 + 8n C. −7 − 13n D. −7 − n(10.5 − 2.5) E. −7 + n(10.5 − 2.5)
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2 votes
Which of the following expressions are equivalent to −3.5(2 − 3n) − 2.5n?

A. −7 − 8n
B. −7 + 8n
C. −7 − 13n
D. −7 − n(10.5 − 2.5)
E. −7 + n(10.5 − 2.5)

User Nick Roth
by
8.1k points

2 Answers

2 votes
It's equivalent to B.
-3.5 x 2 = -7
-3.5 x -3n = 10.5n
-7 + (10.5n-2.5n) = -7 + 8n.
User Tony Isaac
by
7.6k points
7 votes
-3.5(2-3n)-2.5n=-7+10.5n-2.5n
=-7+8n
So the answer is B
User LaneL
by
7.2k points
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