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Ne4ueva [31]
3 years ago
15

Suppose the equation E = $500 + $7x represents a person's earnings (+) for

Mathematics
1 answer:
Sholpan [36]3 years ago
4 0

Answer:

Option D : $780 is the correct answer.

Step-by-step explanation:

Given expression is:

E = $500 + $7x

We will put all the values of given options to check.

A. Putting 430 in given expression

430 = 500 + 7x

430 - 500 = 7x

-70 = 7x

As the number of items sold cannot be negative, therefore, this option is not correct.

B. 530 = 500 + 7x

530 - 500 = 7x

30 = 7x

x = 4.3 (By dividing both sides by 7)

Which is not a whole number.

C. 680 = 500 + 7x

680 - 500 = 7x

7x = 180

x = 25.71

Which is also not a whole number.

D. 780 = 500 + 7x

780 - 500 = 7x

280 = 7x

7x = 280

x = 40

Which is a whole number.

Hence,

Option D : $780 is the correct answer.

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carlos can write 3 to 4 pages in his journal in 2/3 hour. if he writes for 5 hours, what's a reasonable number of pages he can w
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Answer:

23, 24, 25, 26, 27, 28, 29, or 30

22.5 ≤ p ≤ 30

Step-by-step explanation:

So we know that in 2/3 hours, Carlos can write 3 to 4 pages.

First, lets find how many 2/3's are in 5. Lets divide 5 by 2/3.

\frac{5}{\frac{2}{3}}=7.5

So there are 7.5 2/3's in 5.

Now, lets assume Carlos writes 4 pages per 2/3 hours consistently throughout that 5 hours. This would yield the maximum amount of pages Carlos can write in 5 hours.

7.5(4) = 30

So the maximum amount of pages Carlos can write in 5 hours is 30.

Now, lets assume Carlos writes 3 pages per 2/3 hours consistently throughout that 5 hours. This would yield the minimum amount of pages Carlos can write in 5 hours.

7.5(3) = 22.5

So the minimum amount of pages Carlos can write in 5 hours is 22.5.

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22.5 ≤ p ≤ 30

Any value greater than to equal to 22.5 and less than or equal to 30 would be reasonable.

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Use the provided information below to identify each of Mr. Nicholson’s earning opportunities as arithmetic or geometric. For eac
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4,200

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