How many ways can you make change for a dollar using nickels, dimes, and or quarters

Asequence is defined recursively by the formula  f(n  +  1)  =  f(n)  +  3 . the first term of the sequence is  –4. what is the next term in the sequence? –7–117

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3