Answer:

Step-by-step explanation:
This is a compound interest formula expressed as:

Where:
is time in years
is the rate of interest
is the accumulated amount after n years
is the initial amount.
#We substitute the given values to determine amount after n years as follows:

Hence, the amount earned after n years is given by the expression 
Answer:
According to the scatter plot given, and studying that, we get that the most likely number of trees planted in 12 hours will be 13 trees.
Hope my answer helps :)
You distribute the 30x to the equation in parenthesis
So basically you are doing (30x*x)+(30x*-3)
So you get 30x^2-90x
Hope this helps!
Answer:
15years
Step-by-step explanation:
Given data
Rate= 9%
Principal= $2000
Final amount= $4700
The simple interest formula is given as
A= P(1+rt)
Substitute
4700=2000(1+0.09*t)
4700= 2000+ 180t
4700-2000= 180t
2700=180t
t= 2700/180
t= 15 years
Hence the time is 15years
38.97 would be standard form