Last week Colby baby-sat for 12 hours and earned $156. He earned the same amount of money for each hour he baby-sat. How much money, in dollars, did Colby earn per hour for baby-sitting?

20 pointstwo right triangles are graphed on a coordinate plane. one triangle has a vertical side of 3 and a horizontal side of 7. the other triangle has a vertical side of 9 and a horizontal side of 21. could the hypotenuses of these two triangles lie along the same line? yes, because they are both right triangles yes, because they are similar triangles no, because they are not similar triangles no, because one is larger than the other