Johnny had six apples he gives michaela three. how many apples does johnny have

Write an explicit formula that represents the sequence defined by the following recursive formula:

Find the volume of the solid generated when the region bounded by y= x and y= 4√x is revolved about the x-axis the volume of the solid is: (type an exact answer cubic units)

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?