Rounding off numbers is estimating numbers.
((7-x)/3)^2
7500X+25000-y=0
Y=7500X+25000
y = X^2/3 + 0.9sin (kx) √3-x^2
K= 100
2.05*4
2x^2 – x – 1 = 0
(5/2)x – y = 0.5
X + y = 3
(3/2)y – 1 = 0
(3/4)x – 5 = -9
