Question

Megs family and friends gave her a total of $200 for her birthday she wants to use the money to buy vintage T-shirts which cost $16 each you can use a function to describe the amount of birthday money meg has left after purchasing X T-shirts

Answer 1

So we know that if we have an unknown variable that is not stated in the question we can always say Meg buys X vintage T-shirts.

The cost of X vintage T-shirts can be expressed as 16X.

Meg's remaining birthday money after purchasing X vintage T-shirts may be computed by subtracting the cost of the T-shirts from the total amount of birthday money received:

Amount of money Meg has left = Total amount of birthday money - Cost of X vintage T-shirts

= $200 - $16X

So, the function that describes the amount of birthday money Meg has left after purchasing X vintage T-shirts is:

f(X) = $200 - $16X

This is a linear function with a negative slope of -16, indicating that the amount of money Meg has left decreases as she buys more T-shirts.