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Grace [21]
3 years ago
9

The function f(x) = 0.11x + 43 relates how much Derek pays for phone service, f(x), to the number of minutes, x, used for intern

ational calls in a month. What is the value and meaning of f(320)?
A:$78.20; this is the amount Derek pays for 320 months of service.
B:$78.20; this is the amount Derek pays for 320 minutes of international calls.
C: $92.50; this is the amount Derek pays for 320 months of service.
D:$92.50; this is the amount Derek pays for 320 minutes of international calls.
Mathematics
1 answer:
asambeis [7]3 years ago
6 0
The answer is B. <span>$78.20; this is the amount Derek pays for 320 minutes of international calls.

Simply substitute in 320 wherever there is an x and solve. The problem also already told us that x stands for minutes so we know it is 320 minutes.</span>
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Which expressions are equivalent to <br><br> 2 ln a + 2 ln b - ln a?
ycow [4]

Answer:

Choices 2, 3, and 5  are correct.

Step-by-step explanation:

Complete question is:

Check all that apply.

1. ln ab² - ln a

2. ln a + 2 ln b  

3. ln a² + ln b² - ln a

4. 2 ln ab

5. ln ab²

ANSWER:

The given expression is : 2 ln a + 2 ln b - ln a

It simplifies to: ln a + ln b² = ln ab²

Checking the given options.

1. ln ab² - ln a   = ln (ab²)/a = ln b²

  FALSE

2. ln a + 2 ln b = ln ab²

  TRUE

3. ln a² + ln b² - ln a = ln (a²b²)/a = ln ab²

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4. 2 ln ab = ln a²b²

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5. ln ab²

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4 0
4 years ago
Leah wrote 2 different fractions with the same denominator. both fractions were less than 1. can their sum equal 1? explain
grandymaker [24]
Yes. Their sum can be equal to 1 because if they have the same denominator they will add easier like 3/4 and 1/4 or 1/2 and 1/2. All of them have the same denominator and still equal 1
8 0
3 years ago
Solve pls brainliest
gizmo_the_mogwai [7]

Answer:

5/6

Step-by-step explanation:

11/12 - 1/12 = 10/12

10 divided by 2 = 5
12 divided by 2 = 6

5/6

8 0
2 years ago
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PLEASE HELP IVE POSTED THIS AND NO RESPONSE YET ! It’s an exam
solmaris [256]

Answer: 262,000? I'm just guessing

Step-by-step explanation:

one product costs $14 to produce. It is mentioned that you need to produce 14,000 products or items, so you multiply 14 by 14,000 to know the total cost of producing 14,000 items or products, the answer is 196,000, remember there is also a start-up cost of 66,000. So you must add 196,000 to 66,000 which leads to 262,000. Hope this helps :)

3 0
3 years ago
Both Andrew and Karleigh recorded the distance they ran in x minutes on treadmills. Andrew A 2-column table with 2 rows. Column
mars1129 [50]

Answer:

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That is, S = D/t

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S1 = D1/t

We can then say he ran a distance

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Similarly, let's say Karleigh ran a distance

D2 = t × S2

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Let us compare these two, you will notice that the bigger number between S1 and S2 is going to determine the bigger number between D1 and D2.

Let's choose random numbers for S1 and S2 for clarity, say S1 = 5, S2 = 10

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This makes D2 bigger than D1. this is an example i found on the internet.

Step-by-

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7 0
3 years ago
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