Factor the expression 100w^2x^2-64y^2z^2

Which is an equation for the nth terms of the sequence 12,15,18,21

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?