Question

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)

Answer 1

-3.5(2 - 3n) - 2.5n 
= -7 + 10.5n - 2.5n 
= -7 + 8n 

Answer 2

B: -7+8n

-7+10.5n-2.5n=-7+8n
just use distributive property.