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2 years ago

14

the cab charges $1.75 for the flst fee and $0.25 for each mile. write and solve an inequality to determine how many miles eddie

can travel if he his $15 to spend

1 answer:

Dominik [7]2 years ago

6 0

0.25m + 1.75= 15

Move +1.75 to the right side of the equal sign which becomes -1.75

0.25m=15-1.75

subtract 15 and 1.75 which is 13.25

0.25m=13.25

divide 0.25 by both sides. 0.25m divided by 0.25 is 1m and 13.25 divided by 0.25 is 53.

He can travel 53 miles

0.25m + 1.75= 15

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Step-by-step explanation:

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$n = 150$ --- samples

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Hence, the point estimate is 7.10

Solving (b): The critical value

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$CI = 90\%$ --- the confidence interval

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$z = 1.960$

Solving (c): Margin of error

This is calculated as:

$E = z * \frac{\sigma}{\sqrt n}$

$E = 1.960 * \frac{5}{\sqrt {150}}$

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$E = \frac{1.960 *5}{12.25}$

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Solving (d): The confidence interval

This is calculated as:

$CI = (\bar x - E, \bar x + E)$

$CI = (7.10 - 0.800, 7.10 + 0.800)$

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Solving (d): The conclusion

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