Problem You are working on decorating your home for the holidays. You enjoy hanging lights, and so far have invested
in $75 worth of lights. You notice a sale that you can cget strands of lights for $5 a box this week. Write an
expression that describes your total investment(money spent) in lights, depending on how many boxes (b) of
lights you buy. total investment expression: what is the total investment if you purchase 6 additional sets of lights? $: