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erica [24]
2 years ago
9

Most phone numbers have seven digits after the area code, where each digit can be 0-9. How many different phone numbers can ther

e be in one area code?
A) 4,782,969
B) 282,475,249
C) 10,000,000
D) 823,543
Mathematics
1 answer:
andrew11 [14]2 years ago
3 0

Answer:

C) 10,000,000

Step-by-step explanation:

Data provided in the question:  

- The phone number is of 7 digits

- we have choices from 0-9

meaning 10 number of choices, 0 1 2 3 4 5 6 7 8 9

we have 10 choices out of 10 for each of the 7 blanks

Therefore,

The total number of different phone numbers can there be in one area code that can be formed

= 10 × 10 × 10 × 10 × 10 × 10 × 10

= 10^7

= 10,000,000

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Answer:

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(b) NDP = $322.1 billion

(c) NI = $307.7 billion

Step-by-step explanation:

(a) Compute GDP

This can be computed using the following formula:

GDP = Gross Domestic Product = Personal consumption expenditure + net private domestic investment + government purchases + (US exports of goods - US Imports of goods) ......... (1)

Substituting the values into equation (1), we have:

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Since all figures are in billions, we have:

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(b) Compute NDP

This can be computed using the following formula:

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Substituting the values into equation (2), we have:

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Since all figures are in billions, we have:

NDP = $322.1 billion

(c) Compute NI

This can be computed using the following formula:

NI = National Income = NDP - Taxes on production and imports  - Statistical discrepancy ........... (3)

Substituting the relevant values into equation (3), we have:

NI = $322.1 - $14.4 - $0.0 = $307.7

Since all figures are in billions, we have:

NI = $307.7 billion

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Lisa is buying a computer for $1,500. The sales tax rate is 8.5%. Which expression should be used to calculate t, the total cost
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Answer:

<h3>t=$1627.5</h3>

Step-by-step explanation:

Step one:

given data

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Step two

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tax= 8.5/100*1500

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t=$1627.5

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