Question

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Answer 1

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Question 1:
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)

Answer 2

Essentially this question is asking you to simplify the expression −3.5(2 − 3n) − 2.5n

To start this, we should follow PEMDAS. Parenthesis first!

We need to simplify this section first : -3.5(2-3n) by multiplying -3.5 by 2 and 3n.

-3.5 x 2 = -7
-3.5 x -3n = 10.5n

That means -3.5(2-3n) = -7 + 10.5n, so now we need to subtract the 2.5n from 10.5n to completely simplify the expression. What is 10.5n - 2.5n?