8.75+8.75r=9.10

To solve the equation 8.75 + 8.75r = 9.10, we will first subtract 8.75 from both sides:

8.75 + 8.75r - 8.75 = 9.10 - 8.75

This simplifies to:

8.75r = 0.35

Next, we divide both sides by 8.75 to solve for r:

(8.75r)/8.75 = 0.35/8.75

r = 0.04

Therefore, the value of r is 0.04.