Question

Clothing Online  An online clothing company sells custom sweatshirts. The company charges ​$2.50 for shipping plus ​$5.00 for each sweatshirt. Write a linear function rule that models the total cost y​ (in dollars) for any number of sweatshirts x.
Use pencil and paper. Describe how the linear function rule would change if the shipping charge applied to each sweatshirt.
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Part 1
When there is a single shipping​ charge, the linear function rule is yequals

Answer 1

When there is a single shipping charge:
y = 5x + 2.50
(5 dollars per sweatshirt plus a one-time $2.50 shipping fee)

If the $2.50 shipping charge applied to each sweatshirt (i.e., per item):
y = (5 + 2.50)x = 7.50x
( $7.50 total per sweatshirt )