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jessicaortiz6
10.10.2019 •
Mathematics
What is the annual compound interest rate for an investment account modeled by the function
y = 12 * 1.14t?
a.
0.14%
c.
14%
b.
12%
d.
114%
Solved
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Ответ:
C. 14%
Step-by-step explanation:
We are given the function modeling the investment account as,
It is required to find the annual interest rate for the investment.
On simplifying the function, we have,
⇒![y = 12(1+0.14)^t](/tpl/images/0305/6413/25958.png)
As, the general form for the compound interest is
, where r is the interest rate.
On comparing we get,
The interest rate for the model is 0.14 i.e. 14%
Hence, option C i.e. 14% is correct.
Ответ:
4x=18+10
4x=28
x=28/4
x=7