Sam bought some apples by the pound. He sold half the apples for $50\%$ more per pound than his purchase price. He then sold half of the remaining apples for $25\%$ more per pound than his purchase price. He then sold the remaining 650 pounds of apples for $25\%$ less per pound than his purchase price. If he had $\$2600$ in total sales, what was Sam's purchase price, in cents per pound, for the apples?

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