Please help

The plane is vertical. What best describes the shape of the cross section?

trapezoid

rectangle

triangle

pentagon

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2

If a line is defined by the equation y = 5x + 2, what is the slope?