25 gallons of gas were pumped into two different size tanks. express the amount of gas pumped into the smaller tank in terms of the amount g pumped into the larger tank. a) g − 25 b) 25 − g c) g − 25 2 d) 25 − g 2

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

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.

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?