Bob had 51 baseball cards. he gave away 17 baseball cards. how many baseball cards, c, does bob have left? choose that represents the correct equation and solution

Rose and andrew are financing $128,000 to purchase a condominium. they obtained a 15-year, fixed-rate loan with a rate of 5.05%. they have been given the option of purchasing up to four points to lower their rate to 4.81%. how much will the four points cost them?