Solve the Problem $y=m x+b$ Is a Mathematical Model for Actual Time as a Function

Solve the problem.
-Suppose $y=m x+b$ is a mathematical model for actual time as a function of estimated time, where $y$ represents actual time and $x$ represents estimated time and $m$ and $b$ are constants. If $\mathrm{m}=1.3$ and $\mathrm{b}=-4$ , find $\mathrm{y}$ when $\mathrm{x}$ is $120 \mathrm{~min}$ .

A) $114.8 \mathrm{~min}$
B) $152 \mathrm{~min}$
C) $125.2 \mathrm{~min}$
D) $160 \mathrm{~min}$