The student bought 9 pairs of shoes.
What is a function?
"It defines a relation between one variable and another variable."
What is a linear function?
"It is a function of the form f(x) = ax + b, where a, b are real numbers."
For given example,
The total cost, t, of the pairs of shoes, 'x', can be found by the linear function below.
t = 62.50x +7.23
the student spent $569.37 on shoes,
⇒ t = $569.37
We need to find the number of pairs of shoes the student bought.
Substitute t = 569.37 in the given linear function and find the value of 'x'
⇒ 569.37 = 62.50x + 7.23
⇒ 562.14 = 62.50x
⇒ x = (562.14) / (62.50)
⇒ x = 8.99
⇒ x ≈ 9
Therefore, the student bought 9 pairs of shoes.
Learn more about the function here:
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