Answer:
r = -6
Step-by-step explanation:
6r + 7 = 13 + 7r
-6r both sides
7 = 13 + r
-7 both sides
r + 6 = 0
-6 both sides
r = -6
C would be your answer but if you search up math review click photos and itll be a miracle to you
Answer:
420
Step-by-step explanation:
It starts becoming bigger :)
