The graph of f (x) = -0.01x² + x can be used to model the height in feet of a
curved arch support for a bridge, where the x-axis represents the water level and x
represents the distance in feet from where the arch support enters the water. Find the height of the highest point of the bridge.

25 feet.

Step-by-step explanation:

The height of the highest point is the y-coordinate of the vertex parabola. You can follow these steps:

1, Find the x-coordinate of the vertex with the following formula:

In this case, you can identify that:

2. Knowing these values you can substitute them into the formula and then evaluate:

3. Rewrite the function as:

4. Substitute the value of "x" into the function  and evaluate:

Therefore, the height of the highest point of the bridge is 25 feet.  

$8

step-by-step explanation:

it is pretty much backwards.

you take the 4x2 multiply that, and that is = $8