Please help important math test a. identify variables

B. Write a system of equations that represent the situation

C. Solve by using the method you chose

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?

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase