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You and your friend are painting the walls in your apartment. You estimate that there is 1000 square feet of space to be painted. You paint at a rate of 4 square feet per minute and your friend paint at a rate of 3 square feet per minute. Your friend shows up to help you paint 45 minutes after you've already started painting
a. Write an equation that gives the total number of square feet y as a function of the number of minutes X it takes to paint all the walls
b. How long will it take you and your friend finish painting? Round your answer to the nearest minute.
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