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3 years ago

F(x) = 2x2 – 15 Find f(-2)

Mathematics

1 answer:

bogdanovich [222]3 years ago

8 0

Wherever you see an x, replace it with -2,
So f(-2) = 2(-2^2) -15
= (2x4)-15
= -7

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Answer:

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Step-by-step explanation:

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The changing speed of a car is modeled by the function S(t) = −35t + 30, where t is time in seconds. Interpret the model

Flauer [41]

The car has an initial speed of 30 units and is slowing down by 35 units per second ⇒ answer C

Step-by-step explanation:

The form of the linear function is f(x) = m x + b, where

m is the rat of change
b is the initial value

The changing speed of a car is modeled by the function s(t) = -35t + 30, where t is time in seconds.

We need to interpret the model

∵ The changing speed of a car is modeled by s(t) = -35t + 30

- Compare between the model and the form of the linear function

∴ m = -35 and b = 30

∴ The initial speed is 30 units

∴ The speed is changing by -35 units per second

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car is slowing down by this rate

∴ The car is slowing down by 35 units per second

The car has an initial speed of 30 units and is slowing down by 35 units per second

Learn more:

You can learn more about linear function in brainly.com/question/4326955

#LearnwithBrainly

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