What is the perimeter of a table that is 80cm long and 50cm wide?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

The graph shows the charges for a health club in a month. make a function table for the input-output values. writes an equation that can be used to find the total charge y for the number of x classes