Sandra wants to buy some t-shirts online that cost $14 each, and the shipping cost is $23. She has $65 to spend. How many t-shirts did Sandra purchase?

(this is two-step equation math)

Rose drew a regression line for this paired data set. her line passed through (1, 2) and (3, 5) . what is the equation of rose's regression line?

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 square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base