i am sorry if i'm wrong but i believe the answer is Courtney's age
Answer: 169.2 per acre are produced if a field is in the top 25%.
Step-by-step explanation:
Given: The mean rain-fed corn yield of harvested fields are normally distributed, produce 147.2 bushels per acre with a standard deviation of 33 bushels per acre.
Let X denote the mean rain-fed corn yield of harvested fields.
Let x denotes the number of bushels per acre are produced if a field is in the top 25%.
Top 25% on a density curve means , (100-25%)i.e. 75% area lies below x.
I.e.
.
Z-score for p-value of 0.75 (one tailed)=0.67 [By z-table]
Then, 

Here approx value is 169.2 (from options).
So, 169.2 per acre are produced if a field is in the top 25%.
Yes, that is a solution to the system.
-x^5 - x^2+ 9
Here’s your answer
Given:
Principal = $50
Rate of simple interest = 6%
Time = 3 years
To find:
The amount after 3 years.
Solution:
Formula for simple interest:

Where, P is principal, r is the rate of interest in percentage and t is the number of years.
Putting
in the above formula, we get



Formula for amount is:

Where, P is principal and I is the simple interest.
Putting
, we get


Therefore, the correct option is B.