Answer - 150
One square has an area of 25 (5x5) so 6 squares (25x6) have an area of 150.
The slope is 3/1
hope this helps
65 x6 = 390
80 x 3= 240
390+240 = 630
2x^2 + 8x - 12 = 0..divide by 2
x^2 + 4x - 6 = 0
x^2 + 4x = 6...add 4 to both sides of the equation
x^2 + 4x + 4 = 6 + 4
(x + 2)^2 = 10....<== ur constant is 10
x + 2 = (+-)sqrt 10
x = -2 (+ - ) sqrt 10
x = -2 + sqrt 10
x = -2 - sqrt 10