8x- 2 =54
helppp ? ??

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

Plzzz answer both questions and i will give you 100 points

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?