Cynthia bought some grapes on sale for $.94 per pound. if she paid 2.35 for the grapes. how many pounds of grapes did she buy

Which is the completely factored from of xy^3-x^3y

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.

Ineed big ! the cost of a school banquet is $25 plus $15 for each person attending. create a table, sketch the graph, and write an equation in slope-intercept and point-slope form that gives total cost as a function of the number of people attending. what is the cost for 77 people?