2/9 of the students in a school are in sixth grade. How many students are in the school if 42 of them are sixth graders?

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =