The number of T-shirts that a T-shirt company sells can be modeled by the equation #y=-18x+520#, where the price of a T-shirt is represented by #x#. If they sell their T-shirts for $8 each, how many will they sell?

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Answer 1 · 2018-08-06T12:30:33

See a solution process below:

To find the number of t-shirts the company would sell at $8 each we substitute #color(red)(8)# for #color(red)(x)# in the equation and calculate #y#:

#y = -18color(red)(x) + 520# becomes:

#y = (-18 xx color(red)(8)) + 520#

#y = -144 + 520#

#y = 376#

The company's model says they would sell #color(red)(376)# t-shirts at $8 each.