Answer:
Aaron worked for 4 hours
Explanation:
f(x)=12x+10
f(?)=58
58=12x+10
48=12x
4=x
Aaron was the sitter for 4 hours
from the sentence my equation is 12x + 10 = 58
x represents the amount of hours
now solve
12x + 10 = 58
12x = 48
x = 4
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