Which equation represents the cost of the high-
eficiency washing machine over a given number of
years?
which equation represents the cost of the standard
washing machine over a given number of
years?
ater how many years of use would the washing
machines cost the same amount?
which washing machine would be the more practical
purchase if kept for 9 years?

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