need the answers step by step for 6-9

Need The Answers Step By Step For 69 class=

Answer :

Answer:

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