Math help!!!

Question

Which expressions are equivalent to -2.5(1 - 2n) - 1.5n?

Select all that apply.

 

A. -2.5 - 3.5n

 

B. -2.5 + 3.5n

 

C. -2.5 - 6.5n

 

D. -2.5 - n(5 - 1.5)

 

E. -2.5 + n(5 - 1.5)

 

Please show work to indicate what's correct. :(

I'm confused on this heavily.

Answer 1

Stella,

 

Use the Distributive Rule to multiply out -2.5(1 -2n) as -2.5 +5.0n.

Then add 5.0n and -1.5n to get 3.5n.

 

Your final expression is -2.5 + 3.5n, that is, B.

 

Michael.