How to change 2.2 into a mixed number

What is the missing constant term in the perfect square that starts with x^2 -20x

The local farm is advertising a special on fresh picked peaches. the farm charges $4.25 to pick your own peck of peaches and $3.50 for each additional peck you pick. write an equation for the total cost of peaches in terms of the number of pecks. deine your variables. how much does it cost to pick 3 pecks of peaches?

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?