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5 November, 07:16

Two accounts earn simple interest. The balance yy (in dollars) of Account A after xx years can be modeled by y=10x+500y=10x+500. Account B starts with $400 and earns 5% simple annual interest.

a. Which account has a greater principal?

Question 2

How much greater is the principal? $

Question 3

b. Which account has a greater annual interest rate?

Question 4

How much greater is the annual interest rate?

%

+4
Answers (1)
  1. 5 November, 07:37
    0
    1)

    A has a greater principal

    2)

    Principal of A is $500, the principal of B is $400, so A's principal is greater by $100

    3)

    Annual interest rate of A:

    10/500 x 100

    interest rate of A = 2%

    The interest rate of B is higher.

    4)

    B's annual interest rate is 5% and A's annual interest rate is 2%, so B's is higher by 3%.
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Home » Mathematics » Two accounts earn simple interest. The balance yy (in dollars) of Account A after xx years can be modeled by y=10x+500y=10x+500. Account B starts with $400 and earns 5% simple annual interest. a.
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