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2 years ago

If f(x) = 8x2-5, what is f(-1)

Mathematics

2 answers:

Klio2033 [76]2 years ago

5 0

Step-by-step explanation:

Remember math is a language

f(x) : A function of x where x can be any number including a number you choose

when you see f(-1), this tells you what the function is at this given x value. So you substitute - 1 wherever you see x

8(-1)2 - 5

Nikolay [14]2 years ago

4 0

Answer:3

Step-by-step explanation:

Simply plug in -1 for anywhere you see x in the equation so...

8(-1)^2-5

8(1)-5

8-5

Hope this helps

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3 years ago

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Step-by-step explanation:

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jenyasd209 [6]

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deff fn [24]

Answer:

The approximate temperature of the pan after it has been away from the heat for 9 minutes is 275.59°F.

Step-by-step explanation:

The formula for D, the difference in temperature between the pan and the room after t minutes is:

$D = 324\cdot e^{-0.05t}$

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2 years ago

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