The midpoint of the line segment from P, to P2 is (-6,4). If P1 = (-6,6), what is P2?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

Me i’m stuck on all these questions besides the two bottom ones

Pamela has a 30-year, 5.75% mortgage on her $250,000 home. she has been paying on it for 5 years, and has recently hit some financial trouble. if her lender agreed to lower the interest rate on her $231,905.47 balance to 5.5%, what will her new payment be for the remainder of the loan?