Ahiker walked 12.8 miles from 9: 00 am to noon. he walked an additional 17.2 miles from 1: 00 pm. what is his average rate for the entire walk, miles per hour?

first anwser choice.

step-by-step explanation:

the greater/less or equal to symbol (> or < with the line at the bottom) is a closed/filled in circle.

-5c + 2 _< _27

subtract from both sides by 2

-5c _< _ 27

divide both sides by -5

c _< _ 5.4

flip the inequality sign

c _> _5.4

the only possible answer that would match the simplified inequality is the first answer choice

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value