We need to expand the square binomial and then multiply:
<span>3x(x + 3)^2
= 3x(x + 3)</span>(x + 3<span>)
= 3x(x^2 + 6x + 9)
= 3x^3 + 18x^2 + 27x</span>
Answer: 25%
100/56 = 1.785714285714286
1.785714285714286 x 14 = 25
2,180,000 80,000 being rounded up from 78,421

Slope of the given line is :
where ,
let's solve :
Slope = -3 / 4
X and y are proportional hence when y is multiplied by a number, x is multiplied by the same number.
18=6*3 hence when y=18,x=9*3=27
x=27