You know that 15% of a number n is 12. how can you use this to find 30% of n? 45% of n? explain

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

41/17 as a decimal rounded to the nearest hundredth

Someone answer this asap for the first five terms of a sequence are shown. 5, 11, 23, 47, 95, . . which recursive function defines the nth term in the sequence for n > 1? a. f(n) = f(n - 1) + 6 b) f(n) = f(n - 1) + 48 c) f(n) = 3 • f(n - 1) + 1 d) f(n) = 3 • f(n - 1) - 4