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melomori [17]
2 years ago
11

Please assist me with these multiple choice problems​

Mathematics
1 answer:
Mademuasel [1]2 years ago
4 0

9514 1404 393

Answer:

  12. C

  13. D

Step-by-step explanation:

12. For interest r on principal P compounded n times per year for t years, the account balance is ...

  A = P(1 +r/n)^(nt)

For P=800, r=0.05, n=365, t=6, this becomes ...

  A = 800(1 +0.05/365)^2190 . . . . matches choice C

Note: if you're familiar with the formula, you will notice choice C is the only one with 'n' in the right place.

__

13. The form of an exponential function is ...

  y = a·b^x . . . . . . . . where 'a' is the initial value, and 'b' is the growth factor

The form of the equation eliminates choices A and B.

Here, the initial value is 1.87, eliminating choice C.

Matching the problem statement to the form of the exponential function we see that the equation of choice D is appropriate.

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