If I paid $4.07 for something and sold it for $9.80, what is the formula for determining the % gain?

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

True or false look at the picture pls : /

Interest begins accruing the date of the transaction except for auto loans mortgages credit card cash advances credit card purchases