Veronica Sells Berries At A Farmer S Market She Pays 45 For The Booth And Earns

Veronica sells berries at a farmer’s market. She pays $45 for the booth, and earns $5 per pound of berries sold. She sells between 10 and 30 pounds of berries at each market. The function p(b)=5b−45 represents Veronica’s market earnings as a function of pounds of berries sold. What is the practical domain of the function? Please help! Thank you.