Anyone really good at math and can help with my test ? I need answers asap,,ill give brainliest to whoever actually helps

How to do this , and can some one explain

The function show two sisters' savings account and the rate at which they plan to deposit money

Glenda makes an online purchase for picture frames for $12.95 each and formats of $5.89 each the site says it taxes paid by the customer or 6.5% of the total purchase price shipping charges are based on the