Store responses in a cell array
n = 5; %number of questions you're asking
response = cell(n,1);
ecprompt='Counts of Equation?';
response{1} = inputdlg(ecprompt);
eqprompt='Enter Equation (from highest to lowest degree):';
response{2} = inputdlg(eqprompt);
Or ask all questions at once,
prompts = {'Counts of Equation?', 'Enter Equation (from highest to lowest degree):'};
response = inputdlg(prompts)