Free points as long as you discuss with me please don't delete my question i am bored

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

Stephen thublin invests $1,000,000 in a 45-day certificate of deposit with 6.55% interest. what is the total interest income from the investment?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.