Question 1130221:  Use a model to determine the amount owed on a loan of $5,000 with simple interest of 4.25%. The model was A=5000+5000(0.0425t), where A is the amount (total principal plus interest) required to repay a loan, and t is the time, in years.
 
What is the slope of this model? Include units in your answer.
 
How long would it take for the loan amount to reach $7,000? Round to the nearest tenth. 
 Answer by mananth(16946)      (Show Source): 
You can  put this solution on YOUR website! Use a model to determine the amount owed on a loan of $5,000 with simple interest of 4.25%. The model was A=5000+5000(0.0425t), where A is the amount (total principal plus interest) required to repay a loan, and t is the time, in years. 
What is the slope of this model? Include units in your answer. 
How long would it take for the loan amount to reach $7,000? Round to the nearest tenth.
 
A=5000+5000(0.0425t)
 
A= 212.5t +5000
 
compare with y=mx+c
 
Slope = m= 212.5
 
A=7000
 
A= 212.5t +5000
 
7000 = 212.50t+5000
 
2000/212.50=t
 
t= 9.412   years 
  | 
 
  
 
 |   
 
 |