As shown in the model below, there are three lines.
Substitute all x in the equation to 1.6
∴6-4(1.6)=-1.6/4
∴-0.4=-0.4
∴Yes
First you woyld find how many hours total he worked.

Then take the number of hours and multiply by the pay earned per hour.

They would make $360 per week.
An expression is just like an equation but without the equal sign.