Answer:
The slopes of line segments AC and AD are same or constant i.e 
Step-by-step explanation:
We need to find slopes of AC and AD and tell if they are same or not.
The formula used to calculate slope is: 
Finding slope of AC
We have A=(3,2) and C=(0,1)
Finding slope using formula:
We have 

So, Slope of AC is 
Finding slope of AD
We have A=(3,2) and C=(9,4)
Finding slope using formula:
We have 

So, Slope of AD is 
So, the slopes of line segments AC and AD are same or constant i.e 
Answer:
C. 16 months faster
Step-by-step explanation:
You can solve this using a Financial calculator( TI BA II plus in this case)
First, find number of months if recurring monthly payment is $38.50;
Amount borrowed ; PV = -950
Monthly rate ; I/Y = 7.2%/12 = 0.6%
Monthly payment; PMT = 38.50
Future value ; FV = 0
Total duration; press CPT, N = 26.785 OR 27 months
Next, find number of months if recurring monthly payment is $93;
Amount borrowed ; PV = -950
Monthly rate ; I/Y = 7.2%/12 = 0.6%
Monthly payment; PMT = 93
Future value ; FV = 0
Total duration; press CPT, N = 10.573 OR 11 months
Difference = 27 -11 = 16
Therefore, she would be able to pay off the loan 16 months faster.
0.17 in 1 hour
0.34 in 2 hours
0.51 in 3 hours
0.68 in 4 hours
Negative because it is below sea level.