Which of the following could be the side lengths of similar triangles?

Question 5 options:

1, 2, 3 and 4, 5, 6

2, 3, 8 and 4, 6, 16

1, 1, 7 and 2, 3, 14

5, 10, 20 and 5, 10, 15

Margaret is purchasing a house for $210,000 with a 15 year fixed rate mortgage at 4.75% interest she has made a 5% down payment the house is valued at 205,000 and the local tax rate is 3.5% homeowners insurance 600 per year what are her total monthly payment

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

Given that s is the centroid of triangle mno, find sq.