How can you find the volume of a composed figure?

You have just applied, and have been approved for a $58,000 mortgage. the rate quoted to you by the lender is 6.1% for a 30 year fixed mortgage. determine how much of your third month’s payment goes towards the principal. $56.65 $56.93 $57.22 $57.51

What is the answer to question 11? will give extra points! include a explanation (reasonable) for you : )

For what values of a is the sum of the fractions 2a−1 / 4 and a−1 /3 positive?