Answer: 39
Step-by-step explanation: All the numbers in organized order: 30, 32, 32, 36, 42, 43, 44, 45. The median is basically the middle of the numbers, and since we have 8 numbers, the middle of the eight numbers is 36, and 42. Now we add those 2 middle numbers together, and divide them by 2 so we can find the median of those 2 middle numbers. (36+42)/2 is equal to 39, so the final answer is 39.
Answer:
She needs to invest $13,636.36 right now
Step-by-step explanation:
This is a simple interest problem.
The simple interest formula is given by:

In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.
After t years, the total amount of money is:

In this question:
In 15 years, so 
She wants to have $30,000, so 
8% interest, so 
We have to find P.



Replacing:






She needs to invest $13,636.36 right now
Answer:
c. 60.9%
Step-by-step explanation:
Given:
The probability P that a person responds to an advertisement can be modeled by the function:

where
represents number of days since the advertisement first appeared.
To find the probability that a person has responded after 20 days.
Solution:
In order to find the probability that a person has responded after 20 days, we will plugin
in the formula given.
We have:

Plugging in 





Thus, probability
after 20 days = 0.6094
The probability in percentage can be given =
= 60.9%
Answer:
I did this in my head so I'm sorry if I'm not right but I believe its about $90 or $80
Step-by-step explanation:
again im so sorry if I'm wrong
Answer:
6:13 or 6/13
Step-by-step explanation:
the total number of marbles is 26
the total number of red marbles is 12
6 to 13
6:13 OR 6/13
<em>(I was not sure if I was supposed to leave it as 12:26 or simplify it to 6:13, but I think 6:13 is more reasonable since it is asking for a ration)</em>