I have the first 3 answers for you but I going to try to get the 4 answer for you
1. 39
2. 9
3. 62
Answer:
See attachment.
Explanation:
The given function is 
This function is of the form
where 0<b<1
This is an exponential decay function.
To see it clearly, we rewrite this function to get:

This graph will be asymptotic to the x-axis as x-values approaches positive infinity.
The y-intercept is at (0,1).
The graph is shown in the attachment
I don’t understand this language sorry
Answer:
2/3
Explanation:
x + 2x + 3x + 4x + 5x = 10
=> 15x = 10
=> x = 10/15
=> x = 2/3