A building has two elevators that both go above and below the ground. At a certain time of day, the travel time it takes elevator A to reach height h in meters is 0.8h+16 seconds. The travel time it takes elevator B to reach height h in meters is -0.8h+12 seconds. What is the height of each elevator at this time?
How long would it take each elevator to reach ground level at this time?
If the two elevators travel toward one another, at what height do they pass each other? How long would it take?
If you are on an underground parking level 14 meters below ground, which elevator would reach you first?

What are the benefits of secondary source

Biologists recognize five levels of cell organization. the lowest and simplest is the cellular level. organisms here are either unicellular organisms, like protozoa, or colonial organisms. colonial organisms are composed of single-celled individuals that stay together to sustain the life of the whole colony. next on the scale of complexity is the level occupied by tissue. a tissue is a group of similar cells which perform a similar activity. tissues that are organized around a common function together make up an organ, the third level of complexity. the fourth level of organization is the system, formed by a group of organs which together perform a specific bodily process. the fifth and highest level is the organism level, in which body systems work together in a structure capable of independent life. main idea:

While looking at ads on a professional job site, justin saw this job posting: "the employee should have a degree in human behavior and at least 5 years experience in behavioral modifications. we are also looking for an employee who is good at crisis divergence. typically employees will spend a lot of time supporting others."