Quentin deposited 500. In his savings account in two years it grew to $561.80 what percentage was the simple annual interest rate on his savings account

How can you tell when x and y are not directly proportional?

You buy 4 items that cost 2.69 14.45 8.05 13.95 what is the estimated total round to the nearest dollar

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.