Being an isosceles, both sides would be equal.
5X - 32 = 2x +61
Add 32 to each side:
5X = 2X + 93
Subtract 2X from each side:
3X = 93
Divide both sides by 3:
X = 93/3
X = 31
F(x) as a piecewise function would be:
f(x) = ($3/lb)x, for 0≤x≤10,
= ($1.50/lb)x, for (10,20], and
= ($0.50/lb)x, for (20,40]
To the above must be added $7.50, [0,10] or $12, (10,40]
2 points. You answer this with the vertical line test. There are two pairs of points with the same x-axis, so they make two vertical lines. For it to be a function, it must pass the vertical line test, so no two points have the same x-axis. I hope this helps :)
