Reiteration for multiple values of b

Hello, I am trying to write a reiteration program. I am supposed to have 25 values, 5 for each value of 'b'. And then, I need to plot the 5 values computed for each value of 'b' on the same graph. But, I am not sure where to go from here. Any help would be appreciated.

p = 50;

n = 5;

b = [0.5  0.9  1.0  1.1  1.5];

      for i = length(b);

          for t = 1:n;

              b(i+1) = p*b(i)

          end

     end

[Jan]

What exactly is your question? What do you want to plot? Shouldn't the inner loop depend on the value of "t"? What is the wanted output?