Barbara is deciding between Banquet Chefs and CeCe's Catering to cater an awards banquet. Banquet Chefs charges $28/guest plus $590 service
fee. Cece's Catering charges $31/guest plus $425 service fee. Barbara
needs to choose the company that costs less. Who should she choose if
20 guests are attending?

(Plz answer this it would be really helpful)

What is the value of the expression below? (81^2)^1/8

How many ordered pairs of positive integers satisfy xy=32?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?