Answer:
None of the above.
Step-by-step explanation:
n(3 + 2n)
Apply distributive property...
3n + 2n²
There are no extra numbers
12 hrs. 30-6 is 24/2 gives you 12
1/5( 5/2 x 4/7 -11/7) + 3/28
Multiply the terms (5/2 x 4/7) in bracket then subtract it from 11/14. Result will be 10/7.
Then multiply 1/5 with 10/7. The result will be 2/7.
2/7 + 3/28 = 11/28
T