12 points! plz !
the number of students in each seventh-grade homeroom that volunteer in the office are shown in the table. use mental math to find the total number if students who volunteered. explain.

a. 6
b. 5
c. 4
d. 8

What are the domain and range of f(x)=[1/5]x

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.