posted by Jane .
Please show me how to set it up and solve:
You are making a rectangular table. The area of the table should be 10ft squared. You want the length of the table to be 1ft shorter than twice its width. What should the dimensions of the able be?
L = 2W - 1
10 = L * W = (2W-1) * W = 2W^2 - W
Transpose the 10
0 = 2W^2 - W -10
Factor to solve for possible values of W, then determine L from those.