Help please I don’t understand this

See pic below.

Step-by-step explanation:

Create a table of values by letting x equal some numbers such as 0, 1, 5, 7. You can use others, too.

You started filling out the table correctly.

Find the corresponding y-coordinates and write them in the table.

Then plot each point on the graph using a dot.

Then connect the dots with a line.

See the picture below.

3; 9 is 8 to -4

step-by-step explanation:

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

: )