Answer and working out attached. Hope this helps
Answer:
26
Step-by-step explanation:
f(x)=x^2+5x g(x)=5‒x
f(3)=3^2+5(3) g(3)=5‒3
f(3)=9+15 g(3)=2
f(3)=24
f(3)+g(3)=24+2
=26
i think it is easy to understand &i hope it helps you

The graph is attached below.
In order to find the y-intercept, check the graph and see where it hits the y-axis, so in this case the y-intercept would be at (0,6).
To find the x-intercept, check the graph and see where it hits the x-axis, and here it hits at x = -6.
3miles/ 28 minutes times 42 minutes is equal to 4.5 miles.
Therefore, Eric run 4.5 miles in 42 minutes.
Hopefully this helps!