Question

A men's shoe size is related to his foot length and can be modeled by the equations s=1.7f -7.2, where s is shoe size and fis foot length, in inches. What is the shoe size of a man whose foot measures 9 inches?​

Answer 1

B. 8

Explanation:

Given the equation,
`s = 1.7f - 7.2`,

where,

s = shoe size,

f = foot length,

To determine the shoe size of a man that has a foot length (f) of 9 in, substitute f = 9 into the equation.

`s = 1.7f - 7.2`

`s = 1.7(9) - 7.2` (substitution)

`s = 15.3 - 7.2`

`s = 15.3 - 7.2`

`s = 8.1`

His shoe size is approximately 8 inches