Will mark you brainliest

x=11

Step-by-step explanation:

So we know that

5x+5+2x+8=90

we combine like terms

7x+13=90

subtract both sides by 13

7x=77

divide both sides by 7

x=11

$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)