1. (10r+9)+(5r-7-r 2. 30x(-2x^2+7x-8) 3. (7x^2)() !

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Solve |2x - 5| = 4 if anyone could , that would be great

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241. a) 0 b) 1 c) 2 d) 1 2