There are four oranges in each box I have 3 boxes how many oranges do I have altogether?

Find 10th term in a rule 5n - 2

Work out the first 3 terms of 2n-6

Sketch the functions y1 = - x 2 and y2 = x2 - 2 on an x-y system of axes and using integral calculus determine the area enclosed by them. Then: The area is now rotated 360degrees about the x-axis. Using integral calculus determine the volume.