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2 February, 07:34

Jacy has $1,000 to invest in either a fund that pays approximately 4.6% per year or in a savings account with an annual interest rate of 1.8%. Write a polynomial

function S (x) to represent the interest Jacy will earn in 1 year by investing x dollars in the fund and the remainder in the savings account

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Answers (2)
  1. 2 February, 10:16
    0
    S (x) = 0.046x + 0.018 (1000-x)

    Step-by-step explanation:

    Given that:

    A fund rate: 4.6% = 0.046 Saving account rate: 1.8% = 0.018

    Let x is the amount Jacy invest in the fund so (1000-x) is the amount he invests in the savings account

    So a polynomial function S (x) to represent the interest Jacy will earn in 1 year is:

    S (x) = 0.046x + 0.018 (1000-x)

    Hope it will find you well.
  2. 2 February, 10:20
    0
    S (x) = 18-0.028x

    Step-by-step explanation:

    Jacy has a total of $1,000 to invest.

    He invest x dollars in the funds Therefore, amount in the savings account = 1000-x

    Interest Rate of the Fund = 4.6% = 0.046

    Interest Earned on the Fund = Principal X Interest Rate = 0.046x

    Interest rate of the Savings Account = 1.8% = 0.018

    Interest Earned on the Savings Account = 0.018 (1000-x) = 18-0.018x

    Total Interest Earned by Jacy

    = Interest Earned on the Fund+Interest Earned on the Savings Account

    = 0.046x + 18-0.018x

    =18-0.028x

    Therefore, the interest Jacy will earn in 1 year is:

    S (x) = 18-0.028x
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