An escalator decends at a constant rate. After 15 seconds, the escalator is 10 feet below its original position. After 45 seconds, it is 30 feet below its original position. Which equation represents the change in height in feet, y, after x seconds of riding the escalator?

2 x^2 -3x+p

sum of roots = 3/2

let other root be x

3+ x = 3/2

x= 3/2 - 3 = -3/2

product of roots = p/2

3× -3/2 = p/2

-9 = p

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did you get the answer yet?

step-by-step explanation:

c

-by-step explanation:

it would be c

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).