Answer:
r = 6.5
Step-by-step explanation:
Set up an equation:
Therefore, the equation is 8 = 2r - 5
Solve:
8 = 2r - 5
Add 5 on both sides:
+5 +5
13 = 2r
Divide by 2 on both sides:
/2 /2
6.5 = r