a florist sells roses by the dozen. write an equation to find the total cost c of r dozens of roses each dozen is $20

What number gives you a irrational number when added to 2/5

Ineed ! i can’t figure out this graph

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?