If s(x) = 2 - x^2 and t(x) = 3x, which value iS equivalent to (s°f)(-7)?

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

Alice is paying her bill at a restaurant. but tax on the cost of a male is 5%. she decides to leave a tip 20% of the cost of the meal plus the tax

What is the interquartile range (iqr) of the data set represented by this box plot?