Please help with this math it’s kinda confusing to me but please explain simple and thanks!

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?