Compare and contrast euclidean geometry and spherical geometry. be sure to include these points: a.) describe the role of the parallel postulate in spherical geometry. b.) how are triangles different in spherical geometry as opposed to euclidean geometry? c.) geodesics d.) applications of spherical geometry

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?