PLZ HELP PLZ HELP SELECT ALL MEASURMENTS THAT ARE ABOUT 1 YARD LONG

Length of student desk

Height of classrom'

Width of classroom door

Height of building
Length of a movie ticket

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g