Let x represents the hours and y represents the total fees(in dollars)
As per the statement:
For a house call, a veterinarian charges $70, plus $40 an hour
"$40 an hour" means 40x
the equation we get;
Find the x-intercept.
x-intercept states that the graph cross the x-axis.
Substitute y = 0 in the equation and solve for x;
y-intercept states that the graph crosses the y-axis i.e
Substitute x= 0 in the equation and solve for y;
Therefore, x-intercept and y-intercept of equation  are:
it’s supposed to be -4+45=41
the last one 54 doesn't go into 45. 54/100 ?