An adult drinks a beverage containing 110 milligrams of caffeine. The amount c (in milligrams) of caffeine in the person's system can be modeled by the function c = 110(0.89)x where x is the number of hours that have elapsed. About how much caffeine is in the person's system after 3 hours?

i dont know nkw

step-by-step explanation:

kenffledkedncklzkdfeserw

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.

ιт ιѕ (9χ^5+10)(81χ^10-90χ^5+100)

step-by-step explanation:

нσρє ι ¢συℓ∂ нєℓρ уσυ συт тσ∂α

there is no answer sorry!

step-by-step explanation: