Which set of ordered pairs does not represent a function? a) (0, 1), (2, 2), (4, 8), (-2, 7), (5, 8) b) (0, 1), (2, 2), (4, 8), (2, 7), (5, 8), (7, 9) c) (-3, 6), (2, 7), (0, 5), (1, 5), (4, 9), (5, 4) d) (-4, 2), (-3, 2), (-2, 2), (-1, 2), (0, 2), (1, 2) submit

Can someone me with my hwplz(only the circled ones)

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

What statement is true? 2x^2-9x+2=-1