The formula of an area of a square:

a - a side
We have 
substitute:

Used:

Answer:
Step-by-step explanation:
From equations (1) & (2), we find:
6x - 8 = - 3x +10
Plug x = 2 in equation (1)
y = 6(2)-8 = 12-8 =4
So,

His budget is $5000
you take 800 and divide it by 0.16
gives you 5000
Answer:
x intercept (36, 0)
y intercept (0, 9)
Step-by-step explanation:
x intercept when y = 0 so x = 36
y intercept when x = 0 so 4y = 36; y = 9
Answer
x intercept (36, 0)
y intercept (0, 9)
(100-15)% = 85% = 136 students
136 / (85%) = 130*(100/85) = 160 students