If the radius of a circle is 4.25 feet, what is the diameter? and if x= -5 and y=2x^2, then y=

I'll give brainliest if you answer right : )

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.

How many grams the dog will eat in 3 days?