15+17+12= 44
The sold 44 magazine subscriptions in total.
        
             
        
        
        
Answer:
FV= $385,307.82
Step-by-step explanation:
Giving the following formula:
Annual salary (A)= $39,500
Growth rate (g)= 2% annual
Number of years (n)= 9 years
<u>To calculate the total amount earned over 9 years, we need to use the following formula:</u>
FV= {A*[(1+g)^n-1]}/g
A= annual deposit
FV= {39,500*[(1.02^9) - 1]} / 0.02
FV= $385,307.82
 
        
             
        
        
        
Answer:
$3.25 per gallon
Step-by-step explanation:
She had $30 and now has $4, so she spent $30- $4 = $26
With $24 she bought 8 gallons of gas.  
$26/(8 gallons) = $3.25/(1 gallon)      [ divide 26 by 8 to get the unit rate]
 She spent $3.25 per gallon
 
        
                    
             
        
        
        
Answer: Each dozen of chocolate chip cookies costs $1.50/dozen. So if you sell C dozens of them, you win C*$1.50 dollars, where C is a positive integer number. Similar case for the lemon ones, the baker will win L*$1.00 dollars if he sells L dozens of them ( where L is a positive integer), the total charge is the sum of both parts; T = L*$1.00 + C*$1.50.