You invest $500 for equipment to make dog backpacks. each backpack costs you $15 for materials. you sell each backpack for $15 when will you break even write an equation

Emma will roll two number cubes labeled 1 through 6. she will record the sum of the two numbers after each roll. she will roll the two cubes 540 times. how many times should emma expect the sum to equal 5?

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Express -5 2/5 as an improper fraction.