First you have to add all the boys and girls to see how many people are at the bbq. Then take 60 put it over 100 and simplify it down til it cant anymore
Y = 8x + 40. Y = score, and x = hours of homework. Substitute 3 into x 8 x 3 = 24 24 + 40 = 64 So the model predicts a score of 64 for 3 hours of homework.