Answer:
None of the above.
Step-by-step explanation:
n(3 + 2n)
Apply distributive property...
3n + 2n²
There are no extra numbers
Step-by-step explanation
b = 2h is given
2 b + h = 4 hours is given sub in the top equation
2 (2h) + h = 4
5h = 4
h = 4/5 hr or 48 minutes
Answer:
80
Step-by-step explanation:
720/P = 9/1
Cross multiply.
9P = 720
P = 720/9
P = 80