Write in standard form by completing the square y^2+4y-8x+4=0

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

Given the median qr and trapezoid mnpo what is the value of x?

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?