The cost of pencils, C, varies directly as the number of boxes, B, purchased. If 4 boxes cost $10.68, then how much will 9 boxes of pencils cost?

Acollege is planning to construct a rectangular parking lot on land bordered on one side by a highway. the plan is to use 680 feet of fencing to fence off the other three sides. what dimensions should the lot have if the enclosed area is to be a maximum?

3(10x-y)-5(x-y^2) need this solved asap

Use δjkl and δmpn to determine whether don's claim is true or false. which of the following should don use to prove the triangles are similar? sss sas aas aa