Write what the expressions below best represent within the context of the word problem how many quarts of water must be added to 4 quarts of an 80% mixture to obtain a 50% mixture? x represents quarts of water to be added to the % mixture. x + 4 represents the total quarts of the mixture at %.

The number of members f(x) in a local swimming club increased by 30% every year over a period of x years. the function below shows the relationship between f(x) and x: f(x) = 10(1.3)xwhich of the following graphs best represents the function? graph of f of x equals 1.3 multiplied by 10 to the power of x graph of exponential function going up from left to right in quadrant 1 through the point 0, 0 and continuing towards infinity graph of f of x equals 10 multiplied by 1.3 to the power of x graph of f of x equals 1.3 to the power of x