Identify which of the twelve basic functions listed below fit the description given. y= x, y = x2, y = x3, y = |x\, y = 1, y = ex, y=-x, y = ln x, y=sin x, y=cos x, y = int (x), y =-
1
х
1 + e-x
The one function that is decreasing (0,c.).
y = x
a.
C.
1
y%3D
1 +7
b.
y = Inx
d.
1
y =

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.

mnkjn

step-by-step explanation:

answer: the answer is 110