The x intercept is 1 and the y intercept is -3
To help you with problems like this, there is a great graphing website called Desmos where you can put in the equation and it will graph it for you. If you need to know how to find the intercepts, I can help with that too.
The x intercept is where the line crosses the x axis (side to side)
The y intercept is where the line crosses the y axis (up and down)
Let x = number of problems on test
If he got 14 wrong, then x - 14 is the number correct.

x - 14 = .72x
.28x - 14 = 0
.28x = 14
x = 50
The test consisted of 50 problems.
I believe the correct answer would be that it has one solution which is 5. Calculating x for the quadratic equation, you will only get one value so it should be one solution. Hope this answers the question. Have a nice day.
I'm assuming that the side AE is *1.5 of BF. (I havent learnt about midpoints, but I know it's the middle)
23*1.5=<span>34.5
</span>
5x-4=34.5+4 on both sides
5x=38.5/5 on both sidesx=<span>7.7</span>