Which is a valid prediction about the continuous function f(x)?
Х
-3
- 2
-1
0
1
2
f(x)
-15
-5
0
5
0
--5
Of(x) 0 over the interval (-9,99)
Of(x) > 0 over the interval (-1, ).
Of(x) 20 over the interval [-1.11
Of(x) < 0 over the interval (02)

i think its a and d

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.