Need the answers step by step for 6-9

6. 2

7. 13

8. 10

9. -29.78

Step-by-step explanation:

6. 3(1) - 1

3-1

2

7. -2(-2)+9

4 + 9

13

8. 2(3) + 4

6 + 4

10

9. 3.8(-7.6) - .9

-28.88 - .9

-29.78

square root of 36/6 = 2.449489743

square root of 16/6 = 1.632993162

square root of 6 = 2.449489743

the answer is square root of 16/6 because the square root of 36/6 is the same answer as square root of 6 = 2.449489743