What is the measurement of Angle x?

What is (28 + 7 + 6 + 3) x 1/2 show your work

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?