Question

noah knows that his heart rate, or how fast his heart beats per minute, changes depending on what he is doing. he records his heart rate several times each day for a week. this table shows how noahs heart rate while doing different activities compares to his average heart rate. negative numbers represent heart rates lower than the average. activity heart rate compared to normal (bpm) reading -6 playing with dog 9 watching tv -8 brushing teeth -2 pick all the true statements. noahs heart rate was fastest when playing with his dog. noahs heart rate was slower when reading than when watching tv. noahs heart rate was faster when brushing his teeth than when reading. noahs heart rate was slowest when watching tv.

Explanation:

Step1: Analyze heart - rate values

We have heart - rate differences: reading (-6 bpm), playing with dog (9 bpm), watching TV (-8 bpm), brushing teeth (-2 bpm). Positive values mean higher than average heart rate and negative values mean lower than average heart rate.

Step2: Check each statement

• For "Noah's heart rate was fastest when playing with his dog": Since 9 is the only positive value and the largest among all values, this statement is true.
• For "Noah's heart rate was slower when reading than when watching TV": -6 > -8, so the heart rate when reading is higher (less slow) than when watching TV. This statement is false.
• For "Noah's heart rate was faster when brushing his teeth than when reading": -2 > -6, so the heart rate when brushing teeth is higher than when reading. This statement is true.
• For "Noah's heart rate was slowest when watching TV": -8 is the most negative value, so the heart rate when watching TV is the lowest among these activities. This statement is true.

Answer:

Noah's heart rate was fastest when playing with his dog.
Noah's heart rate was faster when brushing his teeth than when reading.
Noah's heart rate was slowest when watching TV.