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How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Which expression will have the same sum as 3_8 + 1/4?