At time x=0 , water begins to drip steadily out of a water tank. After 3 hours, there are 7.7gallons of water in the tank. After 9 hours, 7.1 gallons remain. Write a linear function rule that models the number of gallons of water y left in the tank for any number of hours x.

The linear function rule is y=

exactly you go it

step-by-step explanation:

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.

96 cm is the answer.