The answer is D. a1=2 an=an-1+3
        
             
        
        
        
Hi,
Work:
Equation;

Collect like terms and calculate sum of positive numbers.

Move constant +63 to the right side and change its sign.

Subtract numbers.

Divide both sides of equation with 13.

Hope this helps.
r3t40
 
        
        
        
Answer:
Step-by-step explanation:
A)
<u>According to dimensions of the garage, the scale is:</u>
- 1 in : 20 ft, as the width of the garage is 20 ft and on paper is 1 in
B)
Living room
<u>Dimensions on paper: </u>
C)
<u>Actual dimensions: </u>
- 2*20 ft = 40 ft and
- 1 1/4 * 20 ft = 25 ft
D)
<u>The area of the living room:</u>
- A = lw = 25*40 = 1000 ft²
<u>Cost of carpet:</u>
 
        
                    
             
        
        
        
Answer:
x = 5
Step-by-step explanation:
6x - 3 = 3x + 12
-3x       -3x
_____________
3x - 3 = 12
     +3    +3
_____________
3x = 15
15 divided by 3 = 5 
x = 5
You can double check this by replacing x with (5)
If it is right both sides should equal the same
6(5) - 3 = 3(5) + 12
30 - 3 = 15 + 12
27 = 27
This would prove that x = 5