Use numbers and pictures to show why a row with 6 smiley face has one more than a row with 5 smiley face

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.

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?