Answer: 25.2361459992ft
This question can be solved by a trigonometric equation. Shadow formed when something with height like a tree, so it can be pictured as a vertical line. Shadow is a length of and can be pictured as a horizontal line.
In trigonometric, to find the vertical line length with horizontal line you need tan function. The sun angle will be used in the function, so the calculation would be: tan(31) x 42ft = 25.2361459992ft
We have been given that Tony wants to save $10000 in 6 years.
That means future value S = $10000
Time t= 6 years
Interest rate = 4% yearly = 0.04 yearly
n=12 months per year
Now we have to find monthly payment to recieve $10000 in 6 years. so we need to apply monthly payment formula which is









which is approx $123.
Hence final answer is C) $123.
Solving expression
we get 
Step-by-step explanation:
We need to solve the expression:

Solving:
Multiplying 5 with terms inside the bracket:

So, Solving expression
we get 
Keywords: Solving Expressions
Learn more about Solving Expressions at:
#learnwithBrainly