Me which answer correctly inserts grouping symbols so this expression has a value of 25? 12 - 7 + 2 • 4 + 6 a. (12 - 7) + 2 • (4 + 6) b. (12 - 7 + 2) • (4 + 6) c. (12 - 7) + (2 • 4 + 6) d. 12 - (7 + 2) • (4 + 6)

Its A

(12 - 7) + 2 • (4 + 6)

= 5 + 2 . 10

= 5 + 20

= 25

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour