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Diego started a savings account with $120. Every month, he deposits $15 into the account. He wants to know the number of months, m, until his account has a balance of at least $200. Which inequality represents this situation?

Respuesta :

Answer:

6 months.

Step-by-step explanation:

The equation to help with this problem is

y = mx + b

200 = 15x + 120.  He had 120 to start with and he adds 15 a month.  He wants to know when he will have 200.  The x is what we are looking for.

200 = 15x + 120  Subtract 120 from both sides

80 = 15x  Divide both sides by 15

x  = 5 1/3 months.  We will have to wait until month 6.

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