A sculptor creates an arch in the shape of a parabola. When sketched onto a coordinate grid, the function f(x) = -2(x)(x-8)
represents the height of the arch, in inches, as a function of the distance from the left side of the arch. x. What is the height
of the arch, measured 3 inches from the left side of the arch?
14 inches
15 inches
28 inches
30 inches

Solution:

Given that,

A sculptor creates an arch in the shape of a parabola

The function that represents the height of the arch, in inches, as a function of the distance from the left side of the arch x

f(x) = -2(x)(x-8)

What is the height  of the arch, measured 3 inches from the left side of the arch?

x = 3

Substitute x = 3 in f(x)

f(3) = -2(3)(3-8)

f(3) = -6(-5)

f(3) = 30

Thus the height of arch measured 3 inches from the left side of the arch is 30 inches

30

Step-by-step explanation:

I took the test

answer: f = 32.2m

step-by-step explanation: that is the answer

you are playing an adventure game on your computer. you come across a troll who won't let you pass and there is no other way to get to the other side of the river except over the bridge he is guarding.

the troll is a nerd. he takes great delight in watching people struggle with his problems. very few get them. he only gives you one chance and then he changes the puzzle. you have to solve this one.

before you are four blocks. they are numbered 11,6, -7,21.

he tells that the answer he wants is minus and between -1 and - 2. you can use +, -, ×, ÷   ( and ) as many times as you like or no times at all. you don't like the way he's looking at you, but you need to cross the bridge. what do you do?