combine like terms. what is a simpler form of the expression?

-3(-4y + 3) + 7y

a. 19y – 9
b. 10y
c. -19y + 3
d. -19y – 9

To simplify this expression, you have to distribute. Distribution is when you multiply the outside number by the inside ones. For example, if I distributed 2(4 + 6), I would get (2 × 4) + (2 × 6).

So if we distribute your expression, we'd get:
(-3 × -4y) + (-3 × 3) + 7y
Now simplify:
12y + -9 + 7y
Once more, simplify:
19y - 9

The answer is A

Where’s the following prism