Aaron received a $25 gift card for his birthday. He used it to download a game for $3.99and some songs for $0.99 each.
The following inequality models the relationship among the quantities in this scenario
where x represents the number of songs Aaron can afford to download:
25 ≥ 0.99 x + 3.99
Show all work to solve the inequality

Answers

Answer 1
Answer: 25 ≥ 0.99x + 3.99

Subtract 3.99 to both sides:

21.01 
≥ 0.99x

Divide 0.99 to both sides:

21.22 
≥ x

≤ 21.22

So he can buy less than or equal to 21 songs.
Answer 2
Answer: 21 \geq x



25 \geq 0.99x + 3.99

25-3.99 \geq  0.99x + 3.99-3.99  (Subtract 3.99 on both sides)

21.01/0.99 \geq 0.99x/0.99  (Divide 0.99 to isolate x)

21.01/ 0.99 is 21.222 bar, so round it to the nearest ones place, which is 21.

21 \geq x

Check:

0.99(21)+3.99  (Multiply)

20.79+3.99  (Add)

24.78, which is $25.









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Answers

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Answers

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Answers

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Answers

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Answers

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Answers

Answer:

range=u ± 3.09 sd

Step-by-step explanation:

Given:

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the interval for 99.8% of the values of a normal distribution is given by

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                                                      =26.8  ± 3.09(72)

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range=u ± 3.09 sd = 249.28 , -195.68 !