Choice is lite vest estimate for this expression!

a) 7.1
b) 5.1
c) 6.1

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers