Sam made 84% on a test. the test had 25 questions of equal point value. how many questions did sam miss?

In each diagram, line p is parallel to line f, and line t intersects lines p and f. based on the diagram, what is the value of x? ( provide explanation)

The angle of elevation from point a to the top of a cliff is 38 degrees . if point a is 80 feet from the base of the cliff , how high is the cliff ?

Can someone tell me if these are correct?