A couple seeking to buy a home decides that a monthly payment of $800 fits their budget. Their bank's interest rate is 7.5%. The amount they can borrow A is a function of the time t in years that it will take to repay the debt. If we denote this function by , then the following table defines the function.

?

t

A

t

A

5

40,000

20

103,000

10

69,000

25

113,000

15

89,000

30

120,000

 

Source: Comprehensive Mortgage Payment Tables,Publication No. 492, Financial Publishing Co., Boston Choose the expression in the form  which describes how long they will have to make payments if they need to borrow $69,000.





A.
B.
C. ?
D.
E. ?


Answer: E

Mathematics

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