Answer:
6y - 75 > 135
y > 35
Step-by-step explanation:
Given parameters:
Cost price of supplies = $75
Profit per bird feeder = $6
Expected profit > $135
Unknown:
An inequality that models the total number of feeders Ethan must sell to have the expected profit = ?
Solution:
Let the number of feeders must sell = y
Profit = Selling price - Cost price
Selling price = profit per bird feeder x number of feeders = 6y
Now;
6y - 75 > 135 is the inequality
We must no solve this;
6y - 75 > 135;
adding 75 to both sides;
6y - 75 + 75 > 135 + 75
6y > 210
Divide 6 into both sides;
y > 35
So, Ethan must sell more than 35 feeds to make a profit of more than $135