Enter the missing numbers in the boxes to complete the table of equivalent ratios. pls this is for a quiz its the last question I need help

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

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.