Answer:
Find five rational numbers between 2/3 and 4/5 -
61/90 62/90 63/90 64/90 65/90 66/90 67/90
choose any five :)
Multiply out the bracket so
-27 + 36w - 8w
Then collect the terms so
-27 + 28w
Answer = - 27 + 28w
2 pieces at 2 3/4 feet is 2 x 2 foot 9 inches = 5 foot 6 inches
1 piece that is 3.5 feet is 3 feet 6 inches
2 pieces that are 1 5/8 feet are 2 x 1 foot 7 1/2 inches = 3 feet 3 inches
I think there should be more to the question. If you are looking for the best combination to buy it would be two 7 foot boards
If Jeff writes comic strips at a rate of 3 comics an hour then you must put 3,4,7&9 into the function and add up the products.
9+12+21+27=69