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romanna [79]
2 years ago
9

In 1989 a postage stamp cost $.25. In 1999 a postage stamp cost $.33. Find the average rate of

Mathematics
2 answers:
zalisa [80]2 years ago
7 0

Answer:

0.33-0.25= 0.08

then 1999-1989= 10

lastly 0.008

Step-by-step explanation: so the  average rate of

change in postage in<em><u> cents</u></em> per year. is 0.8 of a cent. or 0.008 of a dollar.

Mrac [35]2 years ago
6 0
I’m pretty sure it is 80 cents, because it changed by 8 cents in 10 years so you’re supposed to divide 8 by 10 and get .8 which is equivalent to 80 cents
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if (20,14) is an ordered pair of the inverse of f(x) which of the following is an ordered pair of the function f(x)
Strike441 [17]
<h3>(14, 20) is the ordered pair of the function f(x)</h3>

<em><u>Solution:</u></em>

Given that,

(20, 14) is an ordered pair of the inverse of f(x)

We have to find the ordered pair of the function f(x)

In an inverse funciton, the domain of f(x) becomes the range and range of f(x) becomes the domain

To find the ordered pair of the function f(x),  we swap the variables x and y

(y, x) of inverse of f(x) becomes (x, y) of f(x)

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3 years ago
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BaLLatris [955]
Hello,

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4 years ago
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julia-pushkina [17]
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