How many school are in a year at your school? You need to figure that out before you answer the question.
Answer:
a=-29/14
Step-by-step explanation:
It will have 2 solutions because, if you take out the (-) it will be a whole diffrent answer!
Looks like 14.4 because you have to add them all together and divide by the total numbers
(20+22+10+5+15)/ 5
