Is y=x^2+7 a linear equation?

No, it is not a linear equation

Step-by-step explanation:

This equation contains the term x², meaning that it is a quadratic function (parabola)

So, it is not a linear equation.

If it were a linear equation, x would not be squared, and the equation would have been in y = mx + b form.

The answer is no, it is not a linear equation.

If Ethan runs for 5 hours total, he will burn 3,250 calories

I got this by multiplying 650 by 5

Hope this helps you