Since you're given the total cost per year (12,000) you multiply it by 4 so that you get the total amount for the four years. e.g. (4 x 12,000) = 480,000
Now you calculate the 75% from this amount because we want to obtain the amount of money the scholarship is worth. That is 480,000 x 75% = 360,000
or 480,000 x 0.75 = 360,000
So, the scholarship is of 360,000
The function g(x) factors as
g(x) = (x-4)(x-6)
so the x-intercepts are at x=4 and x=6.
The appropriate choice is
(4, 0) and (6, 0)
R is the variable in front of the constants 11 and 12. Since they are the same kind of number, take the constants and subract 12 from 11, giving you -1. Take r and place it in front of the constant, which gives you -1r or simply -r

A = 1/2×h ( b+B )
Multiplying with 2 on both sides
2A = h (b+B )
now divide by (b+B) on both sides
2A÷(b+B) = h
or h = 2A÷(b+B)