Step-by-step explanation:
4^m * 4^2 = 12
4^(m + 2) = 4^(log4 12)
m + 2 = log4 (12)
m = log4 (12) - 2.
 
        
             
        
        
        
Answer:
 Nat's salary after 3 years = 976562.5 $
Explanation:
 Salary of Nat =  $500,000
 Raise in salary for next three years = 25 % = 0.25
 Salary of Nat after 1 year = 500,000 + 0.25 * 500,000 = 625000 $
 Salary of Nat after 2 years = 625000 + 0.25 * 625000 = 781250 $
 Salary of Nat after 3 years = 781250 + 0.25 * 781250 = 976562.5 $
 So, Nat's salary after 3 years = 976562.5 $
Easy Method;
    No of years considering = 3
    Initial salary = $500,000
    Rate of increase = 0.25
    Final salary  $
$
Nat's salary after 3 years = 976562.5 $
 
 
        
             
        
        
        
Answer:
- the total installment is  $936
-  the carrying charges are $186
- the monthly rate to buy the items are  19.23 or 20 months
Step-by-step explanation:
$39 for 24 months comes to ...
$39 × 24 = $936
The "carrying charges" are the difference between the cash price and the installment price:
 $936 -750 = $186
  Saving at the rate of $39 per month, it would take ...
   $750/$39 = 19.23 months  
about 20 months to save up the cash price.
Often, such savings would come from a once-a-month paycheck, so it would take more than 19 such paychecks to save the required amount.
hope it will help :)
 
        
             
        
        
        
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