Answer:
b. $150 per month
Step-by-step explanation:
To begin solving this let us calculate the amount of our Goal and how much we are saving per month. Our goal is to save up 4 times the amount of our monthly expenses. So we multiply our monthly expenses by 4 like so,
savings per month

We are currently saving $150 per month. Now that we know our goal is $6000. Lets calculate how far off we are with what we already have in our savings by subtracting our goal from our current savings.

We need to save up $3,600 in 12 months which would be

Therefore we need to put $300 a month into our savings account to reach that goal in 12 months. Since we already put $150, this means we need to make an additional $150 a month to reach our goal in 12 months.
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