4x^2-8x-45=0 how to solve

Which of the following values are in the range of the function graphed below? check all that apply ! - will give the answer "brainliest! "

Urgent need asap △abc is similar to △xyz. also, side ab measures 6 cm, side bc measures 18 cm, and side xy measures 12 cm. what is the measure of side yz ? enter your answer in the box.

Ef is a median of trapezoid abcd. the length of ab is 12, and the length of cd is 18. the length of bf is 4. what is the length of fc?