I'd feel better if you'd already done some of these problems and shared what you'd gotten.
First problem:   A = P (1+r)^t
Here, A = $2000(1+0.03)^5 =   $2318.55
        
             
        
        
        
Answer:
Here
Step-by-step explanation:
1. Set B: 20, 18, 7 
2. 17, 14, 14
 
        
             
        
        
        
The tree's height is 36 feet!
Work/explanation below:
1. The ratio of the boy's shadow to height is 4 : 6 or 1 : 1.5.
2. Plug the tree's shadow into the ratio and you have 24 : 24 X 1.5
3. 24 X 1.5 = 36.
Hope that helped!
:D®
        
             
        
        
        
12 I’m pretty sure because you have x then 3 then 12
        
             
        
        
        
Answer: If you have a positive and a negative, there is one dash left over, and the answer is negative.