Alice is saving money at a constant rate. Suppose she initially has $70 saved, and after 2 months, she has $170 saved. Which of these expresses the rate at which Alice is saving?

Select the correct answer below:

50 dollars per month

70 months per dollar

−50 dollars per month

50 months per dollar

100 dollars per month

50 dollars per month

Step-by-step explanation:

Given

Required

Determine the rate of savings

Suppose in a month, she saves x amount.

In 2 months, she would save 2x

When 2x is added to the initial savings, it gives the total amount saved.

So, we have:

Collect Like Terms

Divide both sides by 2

Hence, she saves $50 dollars monthly

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