Two brothers, Colin and David, earn allowances based on the number of chores that they perform at home. Colin earns $1.50 for each chore. David earns $0.15 for doing 1 chore, $0.30 for doing 2 chores, $0.60 for doing 3 chores, and so on, doubling his allowance for each additional chore. Complete the table below to prove that David's allowance will exceed Colins allowance beginning with the eight chore.