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Pepsi [2]
3 years ago
13

Marco has $38.43 dollars in his checking account. His checking account is linked to his amazon music account so he can buy music

. The songs he purchases cost $1.29. Part 1- write an algebraic expression to describe the amount of money in his checking account in relationship to the number of songs he purchased. Part 2- Describe what the variable represents in the situation
Mathematics
1 answer:
kirza4 [7]3 years ago
4 0

38.43 - 1.29x

variable x represents the number of songs purchased

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Answer:

First, multiplication:

Multiplication is repeated addition, there's really no way to put it simpler. For example:

4 × 6 = 24 because 4 + 4 + 4 + 4 + 4 + 4 = 24

3 × 3 = 9 because 3 + 3 + 3 = 9

9 × 2 = 18 because 9 + 9 = 18

Multiplication, like addition, can also work backwards, so 6 × 4 is also 24, 2 × 9 is 18, and so on.

I recommend practicing your times tables up to 12 if your remembrance has gotten really bad.

Now division:

Division has the same properties as multiplication, except with subtraction. The difference, however, is that division does not work backwards. It's the same as subtraction.

Here are some examples for division:

6 ÷ 3 = 2 because 6 - 3 - 3 = 0 (3 can be subtracted twice, so the answer is 2)

12 ÷ 4 = 3 because 12 - 4 - 4 - 4 = 0

20 ÷ 2 = 10 because 20 - 2 - 2 - 2 - 2 - 2 - 2 - 2 - 2 - 2 - 2 = 0

I'd recommend practicing your long division if you are struggling.

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5 0
3 years ago
Amanda purchased n notebooks. They were 4 dollars each. Write an equation to represent the total cost c that Amanda paid.
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3 years ago
Which graph represents the inequality x ≤ –2 or x ≥ 0?
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For this case we have the following expressions:

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Answer:

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