What is the reflection of (-50, -30) across the y-axis?

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

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

Write 17/20 as a decimal and as a percent.