Find the volume of the solid whose base is the region in the first quadrant bounded by y=x2, y=1, and the y-axis and whose cross-sections perpendicular to the y axis are equilateral triangles.

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?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

What is the missing step in this proof ?