Does this graph represent a function? why or why not?
4990
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a. no, because it fails the vertical line test.
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b. yes, because it has two straight lines.
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c. no, because it is not a curve.
d. yes, because it passes the vertical line test.

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.

A50% increase followed by 33 1/2% decrease

There are 85 apples on the big tree, john picked out 15%. how many did john pick out?