If f(x) = 7x – 12, what is f–1(x) ?
) x-12 / 7
2) x+12 / 7
3) x+7 / 12
4) x-7 / 12

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

y=mx+b

step-by-step explanation:

m slope, b y-intercept