Answer: 12n + 25
Step-by-step explanation:
Let x represent the amount that the school pays for ordering one shirt.
This includes the $25 flat-rate shipping cost. This means that if n shirts are ordered, the total cost including shipping would be expressed as
nx + 25
The school pays $1825 for 150 shirts. The expression would be
150x + 25 = 1825
150x = 1825 - 25
150x = 1800
x = 1800/150
x = $12
Therefore, the equation that models the total cost as a function of the number of n T-shirts ordered is
12n + 25
