*PLEASE ANSWER TY* How many unit cubes are on each layer of the cube?

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Frank owns a $141,000 home, for which he has a 30-year mortgage in the amount of $700 a month. once he has paid off mortgage, how much will he have paid in investment? a. $111,000 b. $109,000 c. $120,000 d. $141,000

*segment an is an altitude of right ? abc with a right angle at a. if ab = 2root 5 in and nc = 1 in, find bn, an, ac.