Which of the following is equivalent to the expression below 12 (-31 + 26) + 45 A. 3.5
B. -3.75
C. 4.2
D. -4.5

Anyone know? will mark brainliest if correct

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.

With finding limits of multi variable !