Answer
x $\leq$10
Work Step by Step
Let x = number of hours dog walking
15-x= number of hours tutoring
8 (15-x)+7.5x$\geq$115
120-8x+7.5x$\geq$115 (Distributive property)
120-0.5x$\geq$115 (Addition property)
5-0.5x$\geq$0 (Subtract 115 from both sides)
5$\geq$0.5x (Add 0.5 x to both sides)
10 $\geq$ x (Divide 0.5 by both sides)
or x $\leq$10
