Use the substitution method to solve the following system of equations:

4x − y = 3
7x − 9y = −2

(1, 1)
(6, −3)
(6, 1)
(1, −3)

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?

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 − 24x 8,000 + 2x 8,000 − 2x

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6