The parabolic path of a basketball being shot into a hoop can be modeled by the equation y=9+12x - 3x^2 , where x represents the amount of elapsed time, in seconds, and y represents the height of the ball in meters. What is the maximum height that the ball reaches? How many seconds does it take to reach its highest point? How high is the ball after 3.1 seconds? How long does it take the ball to reach a height of 15 meters?

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c

-1   1/6.   you dont subtract the denominators

step-by-step explanation:

its a, i had the same answer, its from study island right

step-by-step explanation: