Let x = a + bi and y = c + di and z = f + gi. Which statements are true? a. x + y = y + x
b. (x × y) × z = x × (y × z)
c. x – y = y – x
d. (x + y) + z = x + (y + z)
e. (x – y) – z = x – (y – z)

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