A pool has some initial amount of water in it. Then it starts being filled so the water level rises at a rate of 6 cm per minute. After 20min the water level is 220 cm

Step-by-step explanation:

I think the question below is the one you wanted to ask:

A pool has some initial amount of water in it. Then it starts being filled so the water level rises at a rate of 6 centimeters per minute. After 20 minutes, the water level is 220 centimeters

Graph the pool's water level (in centimeters) as a function of time (in minutes).

Here is my

To draw the linear line, we need to identify the equation that modles this situation. As we know the water level rises at a rate of 6 cm per minute which mean the slope m = 6

The standard form is: y = mx + b <=> y = 6x + b

After 20min the water level is 220 cm

<=> 220 = 6(20) +b

<=> b = 100  

So your  equation is : y = 6x + 100 and the initial amount of water in it is 100

Please have a look at the attached photo

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.