How do you solve this?
i know you have to use the e^x identity but idk how to use it

Recall the exponential function's power series,

The given sum has instead of . We can adjust the given sum to get something usable. Notice that in the series expansion for , the degree of starts at 0, while in the given series, the degree starts at 1. We can actually rewrite the given series so that it starts at a different index:

Then this is exactly without the term. When , we have , so

$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)