3.Students at one school sell magazine subscriptions to raise money for athletic equipment. The school keeps 20% of sales. How many dollars worth of subscriptions must be sold to make $1500?

0.2x = 1500

Solve for x.

7500

Right.

To find out how many dollars worth of subscriptions must be sold to make $1500, we'll need to work backwards and account for the 20% that the school keeps.

First, let's denote the total amount of subscriptions sold as "x" dollars. Since the school keeps 20% of the sales, they will receive 20% of x dollars.

So, the school's share of the sales will be 0.2x dollars.

To find out the amount left over for the athletic equipment, we can subtract the school's share from the total amount of subscriptions sold, which is x dollars (since all the money from the sales is used for the equipment).

So, the amount left over for the athletic equipment will be x - 0.2x or 0.8x dollars.

Now, we can set up an equation to solve for the amount of subscriptions that must be sold to make $1500:

0.8x = $1500

To isolate x, we'll divide both sides of the equation by 0.8:

x = $1500 / 0.8

Dividing $1500 by 0.8 gives us:

x = $1875

Therefore, to make $1500 for athletic equipment, $1875 worth of subscriptions must be sold.