Solve the Problem $y = 3 x + 80$ , Where $y$

Multiple Choice

Solve the problem.
-When a tow truck is called, the cost of the service is given by the linear function $y = 3 x + 80$ , where $y$ is in dollars and $x$ is the number of miles the car is towed. Find and interpret the slope and $\mathrm { y }$ -intercept of the linear equation.

A) $\mathrm { m } = 80$ ; The cost of the service increases $\$ 80$ every mile the car is towed. $b = 3$ ; The cost of the service is $\$ 3$ if the car is not towed.
B) $\mathrm { m } = 3$ ; The cost of the service increases $\$ 3$ every mile the car is towed. $\mathrm { b } = 80$ ; The cost of the service is $\$ 80$ if the car is not towed.
C) $\mathrm { m } = 3$ ; The number of miles the car is towed increases 3 miles for every dollar spent on the service. $b = 80$ ; The tow truck will tow the car 80 miles for no cost.
D) $\mathrm { m } = 80$ ; The number of miles the car is towed increases 80 miles for every dollar spent on the service. $b = 3$ ; The tow truck will tow the car 3 miles for no cost.