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dolphi86 [110]
3 years ago
10

4. If f(x) = 9x + 1, find f-1 (f (3)).

Mathematics
1 answer:
hammer [34]3 years ago
7 0

Answer:

-224

Step-by-step explanation:

let x be -1 and 3

when x= -1

f(-1)=9(-1)+1

= -8

when x= 3

f(3)=9(3)+1

= 28

therefore, f-1 (f (3)) = (-8)(28)

= -224

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Easy question, easy points
Juli2301 [7.4K]

Answer:

Step-by-step explanation:

The solution of a system of linear equations is the point of intersection of their graphs because the intersection represents the only x or y values that will satisfy both/all equations. The graph visually shows that the intersection of these equations is the only spot on the graph that all of the equations have in common. This means that only this spot will satisfy all equations. For example, the intersection may be (0,1); this means that for all equations an x value of 0 will always result in the y value of 1. However, an x or y value that satisfies one equation may not satisfy the others if they do not lead to the desired outcome.

3 0
3 years ago
3/8 rounded to the nearest thousand​
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2 years ago
QUESTION 8 Write an inequality to represent the real-world problem. Then explain how you created the inequality. You have caviti
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Answer:

I can give you alittle head start. I hope it kinda helps.

Step-by-step explanation:

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6 0
4 years ago
The following function represents the profit P(n), in dollars, that a concert promoter makes by selling tickets for n dollars ea
Gre4nikov [31]
A) zeroes

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Extract common factor:

P(n)= -250 (n^2 - 10n + 21)

Factor (find two numbers that sum -10 and its product is 21)

P(n) = -250(n - 3)(n - 7)

Zeroes ==> n - 3 = 0  or n -7 = 0
Then n = 3 and n = 7 are the zeros.

They rerpesent that if the promoter sells tickets at 3  or 7 dollars the profit is zero.

B) Maximum profit

Completion of squares

n^2 - 10n + 21 = n^2 - 10n + 25 - 4 = (n^2 - 10n+ 25) - 4 = (n - 5)^2 - 4

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C) Axis of symmetry

Vertex = (h,k) when the equation is in the form A(n-h)^2 + k

Comparing A(n-h)^2 + k with - 250(n - 5)^2 + 1000

Vertex = (5, 1000) and the symmetry axis is n = 5.



8 0
3 years ago
An electrician paid $398.40 total for 1,000 feet of wire.How much does he have to pay per foot a wire?
alexdok [17]

Divide the total spent by the total feet:

$398.40 / 1000 = 0.3984 per foot.

Round the answer as needed.

8 0
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