Question

For the graph below, what should the domain be so that the function is at least 200? (4 points)
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-5 ≤ x ≤ 20
0 ≤ x ≤ 15
x ≥ 0
all real numbers

Answer 1

At what two x-values is the y-value 200?

Answer 2

-5 and 20

Answer 3

-5 and 20 are where y is 0.

Look at the dashed line where the 200 is. The parabola touches that line at 2 points. What are the x-coordinates of those points?

Answer 4

(0,200) and (15,200)

Answer 5

????

Answer 6

right, so your domain is 0 ≤ x ≤ 15

Answer 7

thanks!

Answer 8

yw