The quadratic function has an x-intercept of (-7,0)
and passes through (-4,-18)
The gradient(m) of its graph is (-18 - 0) ÷ (-4 - -7) = -18/3 = -6
Taking a point (x,y) the equation is;
(y - 0) ÷ (x - -7) = -6
y = -6x - 42
2.4 becase if you add a zero it would still be the same number but it would be 2.40. This is less than 2.42 and more than 2.0
Let's set the first angle as x, the second angle is then 4x, and the third angle is (x+4x)+15, which is 5x+15
the three angles make a sum of 180: x+4x +5x+15=180
10x=165
x=16.5
the second angle is 4x=4*16.5=66
