Answer:
Yes
Step-by-step explanation:
a=1
b=3
c=2
d=4
r = -6
6r + 7 = 13 + 7r
-6r both sides
7 = 13 + r
-7 both sides
r + 6 = 0
-6 both sides
Runner 1 has the fastest pace
54
216/4=54
both answer is 31°
Hope it is helpful for you