82
2 answers:
Answer: OPTION C.
Step-by-step explanation:
The formula of Exponential Growth has the following form:
Where "C" is the initial value, "r" is the growth rate and "t" is the time in years.
In this case we have the following expression:
We can identify that:
Therefore, the meaning of the expression is: The initial number of trees planted by the agency is 1,500, and the growth rate is 2% per year.
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There are 91 such ways in whih the volunteers can be assigned if two of them cannot be assigned from 14 volunteers.
Given that a school dance committee has 14 volunteers and each dance requires 3 volunteers at the door, 5 volunteers on the floor and 6 on floaters.
We are required to find the number of ways in which the volunteers can be assigned.
Combinations means finding the ways in which the things can be choosed to make a new thing or to do something else.
n=n!/r!(n-r)!
Number of ways in which the volunteers can be assigned is equal to the following:
Since 2 have not been assigned so left over volunteers are 14-2=12 volunteers.
Number of ways =14
=14!/12!(14-12)!
=14!/12!*2!
=14*13/2*1
=91 ways
Hence there are 91 such ways in whih the volunteers can be assigned if two of them cannot be assigned.
Learn more about combinations at brainly.com/question/11732255
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