X+4 if x <5
f(x)= 8
if 5 2x-1 if 7 For Ax), evaluate the following:
a. 10)
b. 46)

f(0) = 4 ,  f(6) = 8

Step-by-step explanation:

Since

 then   f(0) = 0+4 = 4

5 < 6  < 7  therefore  f(6) = 8

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.