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3 years ago

9

Sara's savings account balance changed by -$34 one week and by -$67 the next week .Which amount represents the greater change?

1 answer:

podryga [215]3 years ago

4 0

Negative 67 have the greater change

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1 year ago

Help! I have looked at so many lessons on writing exponential functions from a graph and nothing has helped.

Over [174]

Answer:

y = $8(-\frac{1}{2})^x$

Step-by-step explanation:

Let the equation of the exponential function is,

y = a(b)ˣ

Since the graph of this function passes through two points $(4, \frac{1}{2})$ and (3, -1)

For the point $(4, \frac{1}{2})$ ,

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For second point (3, -1),

-1 = a(b)³ ---------(2)

Divide equation (2) by equation (1),

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$-\frac{1}{2}=b$

From equation (2)

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Therefore, equation of the exponential function will be,

y = $8(-\frac{1}{2})^x$

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2 years ago