Which function is continuous across its domain? OA.
I +6, -4 f(1) = {0.5x2, -2 < I<4
20 – 31, 4 SI<8
o
B.
I + 4, -4 f(1) = {0.5x2, -2 25 - 3x, 4 < t < 8
OC. .
I + 4, -4 << -2
(*) = 0.5x2, -2 < x <4
20 - 31, 4 OD
I - 2
(t) = 0.522
-4 < x <-2
-2 25
3
49

b

step-by-step explanation:

b

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.