An office building has three air conditioning units, one for each office. each unit runs only when employees are working.
the tables below show the number of hours employees worked at each office over a three-month period and the total air
conditioning electric costs for the entire office for each month.

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

what are the

22

step-by-step explanation:

22

30,40,50 is correct answer