Ask yourself f(x) equals X +18 to the second power +12
n^8
basically it's like this n^12/n^4 = n^(12-4) = n^8
The answer is line becuase a line is the only segment out fo the three types with arrows on eather end
hope this helps
<------> line
0----------0 segment
0------------> ray
It would take her 10 hours. If it is double the time for one person to complete the task versus two, you can guess that the other person takes the same amount of time
(1/5) / 4.5 = 2 / m....1/5 mile to 4.5 minutes = 2 miles to m minutes
cross multiply
(1/5)(m) = (2)(4.5)
1/5m = 9
m = 9 * 5/1
m = 45 minutes <===