Answer:

Step-by-step explanation:

 
        
             
        
        
        
Answer:
8 years approximately 
The problem (I'm assuming is):
Solve  .
.
I put a t in the problem where I suspected it in went.
Step-by-step explanation:

Divide both sides by 100:


Rewrite in logarithm form. 

Divide both sides by 0.05:

Put left hand side into calculator:


So about 8 years if I wrote down the equation correctly.
  
        
                    
             
        
        
        
To determine the measure of angle C. You would solve the equation for X. X+47=180. X= 180-47. X= 133. The measure of angle C is 133 degrees.
        
             
        
        
        
Answer:
a) (4x® - 5x + 15) - (11 - 7x - 2x)
b)(9x- 6x® - 7x-2) + (10x - 8x + 11)
Step-by-step explanation:
a) (4x® - 5x + 15) - (11 - 7x - 2x)
b)(9x- 6x® - 7x-2) + (10x - 8x + 11)