You live near a bridge that goes over a river. The underside of the bridge is an arch that can be modeled with the function y=-0.000475x^2+0.851x, where x and y are in feet. How high above the river is the bridge(the top of the arch)? How long is the section of bridge above the arch?

Would appreciate if someone could help me..

Actual answers are

1. A
2. C
3. A
4. B
5. D

A

C
A
B
D
100% Standard Form of a Quadratic Function
Quadratic Functions and Equations

1. A. Vertex (2,-10) axis of symmetry x=2

2. C. It took the car 10 seconds to reach a speed of 60 miles per hour.
3. Graph A. Where it faces down going through 1,0 and 3,0
4. B. y=(x+2)^2-7
5. D. The bridge is about 381.16 ft above the river, and the length of the bridge above the arch is about 1,791.58 ft.

Thanks dudes! I’m now passing algebra with a B :)

The answer is: The bridge is about 381.16 ft above the river, and the length of the bridge above the arch is 1,791.58

yayyaalal was right.

A
C
A
B
D
IS 100% RIGHT!!!!

yayyaalal is 100% Correcto mundo

Y’all, the answers to the next one “Modeling with Quadratic Functions” are

1.c
2.d
3.a
4.b
5.c

Have fun finishing up the semester!

Could someone please explain this question to me.

yayyaalal and little mermaid are correct, these are the answers to the unit 6 lesson 2 quick check.