If f(x) = 8x and 2 +1, find °x)

a. 16x + 1
b. 16x + 8
c. 16x^2 + 8x
d. 10x + 1

B.

Step-by-step explanation:

We have, and .

It is required to find .

Substituting the functions, we get,

⇒

⇒

⇒

⇒

Thus, we have,

= .

Hence, option B is correct.

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.