3 years ago

I need more help lol

Mathematics

1 answer:

OverLord2011 [107]3 years ago

8 0

Y = x (1x)

Explanation: substitute in get your answer

Mark brainliest please

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Look at the graph.

Rainbow [258]

Answer:

$f(x) =80 \cdot \: {( \frac{1}{4} )}^{x - 1}$

Step-by-step explanation:

Fro the graph, the first three terms of the sequence are 80,20,5,...

This is a geometric sequence with first term

$f(1)= 80$

The common ratio is

$r = \frac{20}{80} = \frac{5}{20} = \frac{1}{4}$

The function is given by

$f(x) = f(1) \cdot \: {r}^{x - 1}$

We substitute the values we got from the graph into this formula to get:

$f(x) =80 \cdot \: {( \frac{1}{4} )}^{x - 1}$

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