f = -10 because you add 8f on both sides causing it to be 10+f=0
Then, you subtract 10 from both sides to get f = -10
115 times 0.8 because he already spent 0.2. 115 x 0.8 = 92
So $92 left to spend
Hope this helped
Answer:
-18
Step-by-step explanation:
the answer is written in the photo