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jek_recluse [69]
2 years ago
12

The French club is holding a car wash fundraiser. They are going to charge $20 per car, and expect between 30 and 100 cars. Iden

tify the independent and dependent quantity in the situation, and find reasonable domain and range values.
A: number of cars; money raised; 30 to 100 cars; $600 to $2000
B: money raised; number of cars; 30 to 100 cars; $600 to $2000
C: number of cars; money raised; $600 to $2000; 30 to 100 cars
D: money raised; number of cars; $600 to $2000; 30 to 100 cars
Mathematics
1 answer:
marysya [2.9K]2 years ago
3 0
Independent variable = number of cars with domain 30 to 100 cars
dependent variable = moner raised with range $600 to $2000
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You are given the function f(x)=1/x^2+10. f(x) is concave up whenever: A. x^2−10 is negative. B. 3x^2−10 is positive. C. 3x^2+10
lukranit [14]

Answer:

f(x) is concave up whenever:

B. 3x²−10 is positive

f(x) is concave down whenever:

A. 3x²−10 is negative

The points of inflection of f(x) are the same as:

B. the zeros of 3x²−10

Step-by-step explanation:

Given the function f(x) = 1 / (x²+10)

We can determine the concavity by finding the second derivative.

If

f"(x) > 0  ⇒  f(x) is concave up

If

f"(x) < 0  ⇒  f(x) is concave down

Then

f'(x) = (1 / (x²+10))' = -2x / (x²+10)²

⇒  f"(x) = -2*(10-3x²) / (x²+10)³

if   f"(x) = 0   ⇒  -2*(10-3x²) = 0    ⇒  3x²-10 = 0

f(x) is concave up whenever 3x²−10 > 0

f(x) is concave down whenever 3x²−10 < 0

The points of inflection of f(x) are the same as the zeros of 3x²-10

it means that 3x²-10 = 0

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2 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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4 0
2 years ago
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Help me on this thanks
g100num [7]
The answer here is C.

Explanation:
24 feet / 10 inches = 28.8
Then take 60 feet and divide 28.8 by it:
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