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Question:

Jane earns $15 per hour babysitting. If she starts out with $275 in her bank account, which of the following equations represents how many hours she will have to babysit for her account to reach $400?

A 400 = 15h + 275
explanation

The money Jane earns is equal to $15 times the number of hours she babysits: 15h
The total money in Jane’s bank account is equal to the money she started with plus the money she earns: 275 + 15h
Set this expression equal to $400:
400 = 275 + 15h