The graph below models the value of a $20,000 car t years after it was purchased.

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0