Answer:
C. 3r + 7/ 7
Step-by-step explanation:
First, we need to factor, the top value.
3r² + 10r + 7/ 7r + 7
3r² + 10r + 7
= (r + 1) (3r + 7)
= (r + 1) (3r + 7)/ 7r + 7
7r + 7 = 7( r + 1)
(r + 1) (3r + 7) / 7( r + 1)
The ( r + 1) cancel out with each other and we're left with
3r + 7/ 7
