Which is the graph of f(x)=100(0.7)

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab