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ollegr [7]
3 years ago
10

What does it mean if your final exam grade is modeled by the function f(x) = 100 - 3.3x?

Mathematics
2 answers:
Mars2501 [29]3 years ago
8 0

Answer:

B) is the correct answer

Step-by-step explanation:

You have a perfect 100 until you get a question wrong which each question is worth 3.3 points. So, if you answered 7 wrong the x would be replaced by the 7 and the grade would decrease steadily.

rjkz [21]3 years ago
4 0

Answer:

i need points

Step-by-step explanation:

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I am not sure of the answer on this one.
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Answer: Yes, B

Step-by-step explanation:

B because every x-value corresponds to exactly one y value.

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Neko [114]

Answer:

x=13

Step-by-step explanation:

vertical opposite angles are equal.

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For a population with µ = 40 and σ = 8, what is the z-score corresponding to X = 34?
Nastasia [14]

Answer:

Step-by-step explanation:

\frac{34-40}{8}= -.75

3 0
2 years ago
A used-car dealer sold one car at a profit of 25 percent of the dealer's purchase price for that car and sold another car at a l
Daniel [21]

Answer:

C. 1000 loss.

Step-by-step explanation:

Let x represent purchase price of each car.

We have been given that a used-car dealer sold one car at a profit of 25 percent of the dealer's purchase price for that car and sold another car at a loss of 20 percent of the dealer's purchase price for that car.

We can represent the car that dealer sold with 25% profit to find purchase price as:

x+0.25x=20,000

1.25x=20,000

\frac{1.25x}{1.25}=\frac{20,000}{1.25}

x=16,000

Therefore, the purchase price of 1st car was $16,000.

We can represent the car that dealer sold with 20% loss to find purchase price as:

x-0.20x=20,000

0.80x=20,000

\frac{0.80x}{0.80}=\frac{20,000}{0.80}

x=25,000

Therefore, the purchase price of 2nd car was $25,000.

The total purchase price of both cars would be 16,000+25,000=41,000

The total sale price of both cars 20,000+20,000=40,000.

We can see that the sale price of both car is less than purchase price by $1000, so the dealer got a loss of $1000.

Therefore, the dealer's total loss, in dollars, for the two transactions combined was 1000 and option C is the correct choice.

4 0
3 years ago
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