How to tell if your relationship is proportional relationship

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

Based on the spreadsheet below, which of the following is a true statement?

Abari owns 100 shares of stock a and 45 shares of stock b. for the past month, his stocks have been fluctuating inversely. stock a decreased by m cents per share and stock b increased by n cents per share. which equation can be used to find the total change in value of jabari's shares per month?