3 out of 100 is 3 percent. So that is 0.03.
The function f(x) = 5x² + 40x is a parabola. Then the vertex of the parabola will be at (–4, –80).
<h3>What is the parabola?</h3>
It is the locus of a point that moves so that it is always the same distance from a non-movable point and a given line. The non-movable point is called focus and the non-movable line is called the directrix.
The function f(x) = 5x² + 40x
Then add and subtract 80, then we have
f(x) = 5x² + 40x + 80 – 80
f(x) = 5(x² + 8x + 16) – 80
f(x) = 5(x + 4)² – 80
The vertex of the parabola will be at (–4, –80).
More about the parabola link is given below.
brainly.com/question/8495504
Move the 9x to the other side of the equal sine by subtracting it from both sides, then divide everything by three to isolate the y. the euation for slope intercept is y=mx+b
9x+3Y=15
-9x -9x
3/3y=-9/3x+15/3
y=-3x+5