Gina is the chairperson of a group. last week, she set up 22 folding chairs for the group meeting. this week, some of the members could not attend the meeting, so she set up only 15 chairs. how many chairs did gina set up in the past two weeks?

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?