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−45p(b)=5b−45 represents veronica's market earnings as a function of pounds of berries sold. what is the practical domain of the function? a. all integers between 10 and 30 inclusive b. all real numbers c. {10,  20,  30}{10,  20,   30} d. 10≤b≤30