Isabel is making and decorating an 8 in. by 10 in. box for her science experiment. She wants to glue buttons on the box and have the buttons evenly spaced. If Isabel is placing the buttons every 2 in. around the box, how many buttons will she need? What strategy would be best to solve this problem?

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Anut store normally sells cashews for? $4.00 per pound and peanuts for? $1.50 per pound. but at the end of the month the peanuts had not sold? well, so, in order to sell 40 pounds of? peanuts, the manager decided to mix the 40 pounds of peanuts with some cashews and sell the mixture for $2.00 per pound. how many pounds of cashews should be mixed with the peanuts to ensure no change in the? profit?