Apply the binomial theorem to 2^10 = (1 + 1)10

Well in order to lose a pound you would have to burn 1,500 calories. the more calories you burn the more weight you lose. in order to lose 2 pounds you would have to run 4 hours and 28 minutes.

20000 as first it increases by 2500 then by 5000 so next it will increase by 10000

With out knowing the functions you have to chose form, this could be one.y = 5.00xx = hours worked and y = the money he will earn.