Answer:
C. 5 weeks.
Step-by-step explanation:
In this question we have a random variable that is equal to the sum of two normal-distributed random variables.
If we have two random variables X and Y, both normally distributed, the sum will have this properties:

To calculate the expected weeks that the donation exceeds $120, first we can calculate the probability of S>120:

The expected weeks can be calculated as the product of the number of weeks in the year (52) and this probability:

The nearest answer is C. 5 weeks.
Answer: Toby will pay $34.45.
Step-by-step explanation:
I did 60% of 52 and the 6.25% of 52 and added my answers together.
√2 is irrational
a rational number Q can be expressed in the form
where a and b are integers.
- 18 =
⇒ rational
⇒ rational
3.14 =
⇒ rational
√2 = 1.414213562...... ⇒ irrational
Just substitute the value of x from second equation into first equation:
N = x + y - n = 5
N = u + v + y - n = 5
N = 0 + y - n = 5
In short, N would be equal to y - n which is still equal to 5
Hope this helps!