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2 years ago

Can anyone help please????

Mathematics

1 answer:

Nesterboy [21]2 years ago

6 0

Answer:

Option A. $(f_of^{-1})(-2)=-2$

Step-by-step explanation:

Point to remember while solving the question of function,

$(f_of^{-1})(x)=x$

Here, 'f' is the parent function and $f^{-1}$ is the inverse of the function 'f'.

So for the given function,

f(x) = 2x - 2

$(f_of^{-1})(x)=x$

For x = -2

$(f_of^{-1})(-2)=(-2)$

Therefore, Option A will be the correct answer.

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40 POINTS is (4,7) a solution of equations? Explain your answer 2x+4y=36 3x-4y=-6

dsp73

2x + 4y = 36
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5x = 30
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2x+4y=36
2(6)+4y=36
12 + 4y = 36
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answer
(6, 6) is a solution of equations
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3 years ago

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Suppose there were m married couples, but that d of these 2m. people have died, Regard the d deaths as striking the 2m people at

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Total people that died = d

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Total people remaining = 2m - d

Hence the function that represents surviving people are X = 2m - d

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2 years ago

What are the zeros of the quadratic function f(x) = 6x^2 + 12x - 7?

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2 years ago

Jim sells used drones for 70% of the original manufacturer's purchase price of a new drone. Jim also sells new drones for 15% mo

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The function for the amount saved if they purchase a used drone rather than a new drone from Jim's store is f(x) = 0.45x

He sells used drones at 70% of the price (x).

So, the selling price of a used drone is:

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$\mathbf{Used = 0.7x}$

Also, he sells new drones at 15% more of the price (x).

So, the selling price of a new drone is:

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Express percentage as decimal

$\mathbf{New= (1 + 0.15) \times x}$

$\mathbf{New= 1.15 \times x}$

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The amount saved is the difference between the prices of the drones.

So, we have:

$\mathbf{Saved =New - Old}$

This gives

$\mathbf{Saved =1.15x- 0.7x}$

Subtract

$\mathbf{Saved =0.45x}$

Express as a function

$\mathbf{f(x) = 0.45x}$

Hence, the function for the amount saved is f(x) = 0.45x