Factor polynomial
9f^2−16

a. (3f−4)(3f+4)

b. can't factor

c. 9f−16

d. (3f−4)(3f−4)

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Find the value of x. round the length to the nearest tenth