Can someone PLEASE help me with either number 7 or 8. If you could explain it too that would be nice!!

w= x - 3

Step-by-step explanation:

7.)

area of rectangle = length x width

plug in what we know

2x^2 - 11x + 15 = (2x-5)(width)

Basically you have to factor the trinomial 2x^2 - 11x + 15. We already know one of the solutions is 2x-5.

When you factor you get (2x-5)(x-3).

so the width is x - 3

I hope that makes sense.  

ok then what happened.

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: