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pochemuha
4 years ago
14

Serena has a summer job as a lifeguard at the neighborhood pool. She earns $240 a week. By rounding her weekly income to the nea

rest hundred dollars, find a reasonable estimate for her total income during the 11-week summer. A. $2000 B. $2200 C. $2640 D. $3300
Mathematics
1 answer:
Nesterboy [21]4 years ago
3 0
<h2>Answer: B </h2>

Step-by-step explanation:

If your rounding her weekly income you would go down to $200 then take that times 11 for each week, giving you $2,200 roughly

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Identify the domain and range of the graph.
Bad White [126]

Answer:

Domain (x): (-∞ , -1) ∪ (-1 , 3) ∪ (3 , ∞)

Range (y): (3 , ∞) ∪ (-∞ , ∞) ∪ (-∞ , 3) -> (-∞ , ∞)

Step-by-step explanation:

Domain (x): (-∞ , -1) ∪ (-1 , 3) ∪ (3 , ∞)

Range (y): (3 , ∞) ∪ (-∞ , ∞) ∪ (-∞ , 3) -> (-∞ , ∞)

5 0
3 years ago
What is the value of x?
Anarel [89]

Answer: 5

Step-by-step explanation:

By the inscribed angle theorem.

\frac{9}{15}=\frac{2x-1}{3x}\\\\27x=30x-15\\\\-3x=-15\\\\x=5

4 0
2 years ago
Help pls no linksill give you briliantest ​
Aneli [31]

Answer:

W=20

A=400

Step-by-step explanation:

90+310 for area

5 0
3 years ago
The y-intercept of the graph of y = -7x + 140 is located at (0,c). What is the value of c
Alex787 [66]

Answer:

c = 140

Step-by-step explanation:

y = -7x + 140

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4 0
3 years ago
Read 2 more answers
If f(x)=k (square root)2+x, and f^-^1 (-15)=7, what is the value of k
horrorfan [7]

There's a bit of ambiguity in your question...

We know that f^{-1}(-15)=7, which means f(7)=-15.

I see three possible interpretations:

• If f(x)=k\sqrt2+x, then

f(7)=-15=k\sqrt2+7\implies k\sqrt2=-22\implies k=-\dfrac{22}{\sqrt2}=11\sqrt2

• If f(x)=k\sqrt{2+x}, then

f(7)=-15=k\sqrt{2+7}\implies -15=3k\implies k=-5

• If f(x)=\sqrt[k]{2+x}, then

f(7)=-15=\sqrt[k]{2+7}\implies-15=9^{1/k}\implies\dfrac1k=\log_9(-15)

which has no real-valued solution.

I suspect the second interpretation is what you meant to write.

4 0
3 years ago
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