Identify the initial amount a and the decay factor b in the exponential function. y equals 5 times 0.5 superscript x

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?

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?