Selena Gomez's gym membership coast $180 to sign up and then charges $6 for each visit. Demi Lovato's gym
membership costs $160 to sign up and then charges $8 for
each visit. At how many visits will they have spent the same
amount of money?
What is the scientific notation ?

What is the value of x in the diagram below?

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.

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)