Algebra Keystone 2023 Released Items Module 2

Front

What is the formula to calculate the time it takes for a heart rate to return to resting rate when decreasing at a constant rate?

Back

Time (minutes) = (Initial Heart Rate - Resting Heart Rate) / Decrease Rate

Front

What does the equation y = 17,600 - 23x represent in the context of a satellite's altitude?

Back

It represents the altitude (y) of the satellite in kilometers, decreasing at a rate of 23 kilometers per month (x) from an initial altitude of 17,600 kilometers.

Front

How do you determine the slope of a linear function from its equation?

Back

The slope is the coefficient of x in the equation f(x) = mx + b, where m is the slope.

Front

What is a quartile in statistics?

Back

A quartile is a type of quantile that divides a data set into four equal parts, with each part representing 25% of the data.

Front

How do you calculate the average rate of reading pages?

Back

Average Rate = Total Pages / Total Time (in minutes).

Front

What is the resting heart rate of Marty after exercising?

Back

72 beats per minute.

Front

If a satellite's altitude decreases at a constant rate, what does this imply about its motion?

Back

It implies that the satellite is losing altitude steadily over time.

Front

What is the significance of the first and third quartiles in a data set?

Back

The first quartile (Q1) indicates the 25th percentile, while the third quartile (Q3) indicates the 75th percentile of the data.

Front

How do you convert minutes and seconds into total minutes?

Back

Total Minutes = Minutes + (Seconds / 60).

Front

What is the average time it takes Dana to read one page?

Back

Dana reads 2 pages every 3 minutes, so the average time per page is 1.5 minutes.