Answer:
9y+45
Step-by-step explanation:
9(y+5)
=9*y+9*5
=9y+45
Since 3 squared is 9 and 4 squared is 16, the square root of 13 will fall somewhere between 3 and 4
It would be mean. The mean is the average that is you are looking for, since she wants a summerization of all the values in the data set. To find the mean (average) add all the numbers and then divide by the amount of numbers.