Marie sells magazine subscriptions. She earns $15 a week plus $3 for each subscription she sells. How many subscriptions must she sell to earn $90 in one week?
25
(90 - 15)/3 = ?
A lot measures 75 ft by 100 ft. It is all lawn except for the house on the lot. The house measures 30 ft by 50 ft. What is the area of the lawn?
a.
1,500 ft
c.
7,500 ft
b.
6,000 ft
d.
8,000 ft
Please select the best answer from the choices provided
A
B
C
D
To answer this question, we need to find the number of subscriptions Marie must sell to earn $90 in one week.
Let's break down Marie's earnings. Marie earns $15 a week regardless of the number of subscriptions she sells. In addition to that, for each subscription she sells, she earns an extra $3.
So, let's represent the number of subscriptions she needs to sell as "x".
The total earnings (E) can be calculated by adding the fixed weekly earnings and the earnings for the subscriptions sold:
E = $15 + $3x
We know that Marie wants to earn $90 in a week. Therefore, we can set up the equation:
$90 = $15 + $3x
Now, let's solve this equation to find the value of x, which represents the number of subscriptions Marie needs to sell.
Starting with the equation:
$90 = $15 + $3x
First, we subtract $15 from both sides:
$90 - $15 = $3x
$75 = $3x
Next, we divide both sides of the equation by $3:
$75 / $3 = $3x / $3
25 = x
So, Marie must sell 25 subscriptions to earn $90 in one week.