A school has 600 pupils. 1/5 are in the upper school, 1⁄4 in the middle school and the remainder in the lower school. How many pupils are in the lower school?

Solve the x in the equation x^2+14x+17=-96

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?