Which of the following relationships represents a positive correlation between two variables?

As the amount of water a plant receives increases,

As the number of hours a person exercises decrease

As a student class attendance decreases, the stude

As the number of mile driven increases, the amount

ATI TEAS 7 Math Practice Questions

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Question 1

A couple dining at a restaurant receives a bill for $38.40. They wish to leave a 15% gratuity. What is the estimated gratuity amount?

Your Answer: Option(s)

Correct Answer: Option(s) A

Rationale

The estimated gratuity amount is $6.00.

The couple wants to leave a 15% tip on a bill of $38.40. To calculate this, you multiply the total bill by 0.15 (representing 15%). This results in a gratuity of approximately $5.76. This amount, when rounded to the nearest whole dollar, gives an estimated gratuity of $6.00.

A) $6.00
The calculation of 15% of $38.40 yields a result of approximately $5.76. This amount, when rounded to the nearest whole dollar, becomes $6.00. Therefore, choice A) is correct.

B) $5.00
While $5.00 is a reasonable tip for many restaurant bills, it is less than 15% of $38.40. Therefore, choice B) is incorrect.

C) $4.00
$4.00 is significantly less than 15% of $38.40. Therefore, choice C) does not accurately represent the desired gratuity.

D) $7.00
Although $7.00 is more than the exact 15% of $38.40, it is not the closest estimation. The calculated gratuity of $5.76 is closer to $6.00 than $7.00. Therefore, choice D) is not the most accurate estimation.

Conclusion
When calculating a 15% gratuity on a bill of $38.40, the result is approximately $5.76. When this amount is rounded to the nearest whole dollar for estimation purposes, the result is $6.00. Therefore, the best estimate for a 15% gratuity on a bill of $38.40 is $6.00. The other options represent gratuity amounts that are either less or more than the desired 15% of the total bill.

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The estimated gratuity amount is $6.00.

As the amount of water a plant receives increases, represents a positive correlation between two variables.

A) 3x - 4 is the expression that represents the length of the rectangle in terms of X.

The athlete's average time to run 1 mile is 7.5 minutes.

0.611 is the correct decimal placement for the product of 1.3 X 0.47.

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The estimated gratuity amount is $6.00.

As the amount of water a plant receives increases, represents a positive correlation between two variables.

A) 3x - 4 is the expression that represents the length of the rectangle in terms of X.

The athlete's average time to run 1 mile is 7.5 minutes.

0.611 is the correct decimal placement for the product of 1.3 X 0.47.

Free Preview Ended

Unlock Full Access

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