Which circles have a circumference of 18pi units?
choose all answers that are correct.

a. a circle with a radius of 9 units

b. a circle with a radius of 18 units
c. a circle with a diameter of 18 units

d. a circle with a diameter of 36 units

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

What is a rational number between 9.5 and 9.7

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.