The function y = 12 x2−4x+8,006 y

=

1
2

x
2
−
4
x
+
8
,
006
models the relationship between the elevation, y feet, of a hiking trail and the distance, x feet, from a trailhead. What are all the values of x such that the elevation of the trail is at least 8,000 feet?

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

is there a picture

step-by-step explanation:

what i would say the best answer is a. 40.5