Final answer:
To determine the number of sweatshirts Katrina would need to order from each company for the costs to be the same, set up an equation 21.50x = 18x + 70 and solve for x.
Step-by-step explanation:
To determine the number of sweatshirts Katrina would need to order from each company for the costs to be the same, we can set up an equation.
Let's start with MH Designs. The cost per sweatshirt is $21.50, so the total cost would be 21.50x, where x is the number of sweatshirts Katrina orders.
Now let's look at Print Rich. The cost per sweatshirt is $18, and there is a one-time setup cost of $70. So the total cost would be 18x + 70.
To make the costs equal, we set up the equation 21.50x = 18x + 70. We can then solve for x.