Your class is selling boxes of flower seeds as a fundraiser. The total profit p depends on the amount x that your class charges for each box of seeds. The equation p equals negative 0.5 x squared plus 36 x minus 90 models the profit of the fundraiser. What's the smallest amount, in dollars, that you can charge and make a profit of at least $522?

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.

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.