Answer:
8x^3 + 4x^2 + 4x -7
Step-by-step explanation:
Add like terms.
(a+b)(a+b)
=a^2 + ab + ab + b^2
=a^2 + 2ab + b^2
Constant rate means it is linear so we don't have to worry about fluctuation.
change in y/ change in x=-18-(-25.2)/5-8=2.4 meters per second
