Easy. There is a pattern on the graph. Each baseball card set costs $4. If you add $4 to the $16 (because that is what she will have left after buying 1 baseball card set), you will get $20. So the answer is $20
        
                    
             
        
        
        
1/x+1/a=1/a
minus 1/a from both sides
1/x=0
false
let's try a differnt way
1/x+1/a=1/a
times both sides by xa
a+x=x
minus x from both sides
a=0
???
1/0 is undefined
this creates problems
no solution
        
             
        
        
        
Answer:
Step-by-step explanation:
they are both written about a particular individals life
 
        
                    
             
        
        
        
Y - y1 = m(x - x1)
slope(m) = -5
(4,1)...x1 = 4 and y1 = 1
now we sub
y - 1 = -5(x - 4) <===
        
                    
             
        
        
        
Answer:
B
Step-by-step explanation: