This graph models the number of teachers assigned to a school, as determined by the number of students. what is the constant of proportionality? 1/25 1/20 1/15 1/10

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Standard deviation of 19,29,21,22,23