Question

Order of Operation

10) An electrician charges $45 per hour and spends $20 a day on gasoline. If he worked for seven hours, write an algebraic expression to represent his earnings for the day.

Answer 1

y = 45(7) - 20

Explanation:

Money earned: 45x.

Money spent: 20

Total money: 45x-20

In this case, if he worked 7 hours, he would make a total of 45(7)-20, or 295 dollars for the day.

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Answer 2

45(x)-20

x=hours

7 hours

x=7

45(7)-20 =295