In May, Jenna's mean weekly salary was $78. She earned $70 in Week 1, $88 in Week 2, and $67 in Week 3. How much did Jenna earn in the last week of May?

just add then all up then divide each of them buy the answer

Step-by-step explanation:

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign