Answer:
a = 11
Step-by-step explanation:
if A is 7 in the equation A + 4, the it could also be written as 7 + 4.
then it would just be simple addition, because you would add 7 + 4, which equals 11.
Hope this helps!
 
        
             
        
        
        
Answer: 
175
Explanation:
1. an (any term) = 27
2. a1 (first term) = -7
3. d (common difference) = 7
• Use the explicit formula:
an = d(n - 1) + a1
a27 = 7(27 - 1) - 7
- Subtract inside the parenthesis ():
a27 = 7(26) - 7
- Distribute: 
a27 = 182 - 7
- Subtract: 
a27 = 175
        
             
        
        
        
Answer:
What are the choices and what grade level going to 4th-12th
Step-by-step explanation:
 
        
             
        
        
        
1,770,000 
find the first part of the equation (2200000) and then the second part (430000) and subtract