Answer:
−3a+38
Step-by-step explanation:
i simplified the expression
<h2>
Answer:</h2>
[C] <u>The government doesn’t understand the value of trees to Kenyan people and unknowingly damage their quality of life</u>.
State that- <u>Wangari Maathai</u> was a Nobel laureate and environmental activist. She is responsible for starting the Green Belt Movement. She has been threatened, beaten, and jailed many times by the Kenyan government for protesting the destruction of public forests. But she never stopped. And she succeced in her mission.
By taking in mind the number of combinations of 4 out of the 7 dishes, and the possible orders of these 4 dishes, we will find that there are 840 unique ways to arrange 4 of the 7 dishes.
We know that if we have a set of N elements, the total number of different combinations of K elements (K ≤ N) out of the N elements is given by:

In this particular case, we have:
- N = number of available dishes = 7
- K = number that we need to select = 4
Then the number of different combinations is given by:

Now we have 4 dishes selected, but we also need to order them.
- For the first dish, there are 4 options.
- For the second, there are 3 options (as one was already selected).
- For the third, there are 2 options.
- For the last one there is only one option.
The number of different arrangements of the dishes is given by the product between the numbers of options above, this gives:
4*3*2*1 = 24
Then the total number of unique ways of arranging 4 of the 7 dishes is:
C = 24*35 = 840
Where we take in mind the possible number of combinations of 4 out of the 7 dishes, and the possible orders of these 4 dishes.
If you want to learn more, you can read:
brainly.com/question/9976085