Fiona is trying to prove that a pair of expressions are equivalent by using substitution. Which pair of expressions have the same value if she substitutes y = 3?

A. 3 (4 minus y) minus 7; 5 + 3 y
B. 9 + y + 4 y - 2 - 3 y; -2 y + 7
C. 5 + y - 2 - 6 y + y; 8 y + 3
D. 2 y + 7 + y - 2 + y; 4 y + 5

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.

Polynomial that can be factored as (3x-4)(3x+4)

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