Please help me with these questions! I have to show work and complete all of this but I'm confused. It is due at 11:59 please help! Can you show it on paper please thank you!!

Which of the following tables represents exponential functions?

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.