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zloy xaker [14]
3 years ago
13

Write N as a discrete exponential function of t of the form N(t)=A(1+r)t. (HINT: You will need to find (1+r), where r is the rat

e. Use N(11)=130 and the initial value N(0)=84 to find it.)
Mathematics
1 answer:
Whitepunk [10]3 years ago
5 0

Answer:

N(t)=84(1+0.0405)^t.

Step-by-step explanation:

We have been given that N(11)=130 and N(0)=84. We are asked to write N as a discrete exponential function of t of the form N(t)=A(1+r)^t.

Using our given information, we can set an equation as:

N(0)=A(1+r)^0

84=A*1

84=A

Using our given information, we will get:

N(11)=A(1+r)^{11}

Substitute the given values:

130=84(1+r)^{11}

\frac{130}{84}=\frac{84(1+r)^{11}}{84}

1.5476190476190476=(1+r)^{11}

Switch sides:

(1+r)^{11}=1.5476190476190476

Take 11th root of both sides:

\sqrt[11]{(1+r)^{11}}=\sqrt[11]{1.5476190476190476}

1+r=1.04050024747304

r=1.04050024747304-1

r=0.04050024747304

r\approx 0.0405

Therefore, our required function would be N(t)=84(1+0.0405)^t.

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