A ball is thrown from the ground and follows a path represented by the function b(x) = – x2 + 4x. At the same time an arrow is shot from a height of 8 feet and follows a straight path given by the function a(x) = -3x+8. At what time are the arrow and the ball at the same height?

it's d.

step-by-step explanation:

because: -1(4x + 1y) +2 (1x-3y) distribute each number into the parenthesis.

then you would get: -4x - 1y + 2x -6y combine like terms

and get: 2x -7y

hope my answer has you if not then i'm sorry.

is there a picture

step-by-step explanation:

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.