Which of the following expressions are equivalent to –3.5(2 – 3n) – 2.5n?

Thanks so much! 

please help me with this question in the next 5 mins because I have to logout in 5 mins!!!!!!

–3.5(2 – 3n) – 2.5n      distribute the -3.5 across the terms in parentheses

-7 + 10.5n - 2.5n         combine like terms

-7 + 8n

Hint:  -3.5(2 - 3n) - 2.5 n

=  -3.5(2) + -3.5(-3n) - 2.5n     (using the distributive property)

=  -7.0 + 10.5n - 2.5 n

=                          <--- finish this  (you will get one answer from A, B and C and another answer from D and E)

Which of the following is equivalent to (n – 3)(n – 5)?

help help

Which expressions are equivalent to 7b(3+c)?

Select ALL correct answers.

A.−4b+7c

B.(7b⋅3)+(7b⋅c)

C.14bc

D.21b+7bc

E.7b+14bc

Hurry up and answer this I only have 5 min.