# Algebra 1B

The polynomial given by 1.6t^ 2 - 28t + 200 calculates the heart rate, where t represents the elapsed time in minutes since exercise stopped.

1. What is the heart rate when the athlete first stops exercising?

2. What is the heart rate after 5 minutes?

3. Describe what happens to the heart rate after exercise stops.

1. 👍 0
2. 👎 0
3. 👁 205
1. I will assume that you have a typo and you meant
- 1.6t^2 - 28t + 200

since it would only decrease for the first 8 or 9 minutes, after that the heart rate would actually increase. This makes no sense.

which is it ?

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Health P.E. (Check answers)

1. The average heart beats about 100,000 times a day. Is it True? 2. The heart is located inside the ribcage and just to the right of the breast bone. Is it False? 3. The heart has four chambers and is divided into a right and

2. ### Personal fitness

There are three important benefits to the warm up session: (1 point) flexibility is increased, the muscle is pushed to its full potential, and the chance of dizziness or fainting caused by the pooling of blood in the extremities

3. ### math

When grizzly bears hibernate, their heart rates go down to 10 beats per minute, which is 20% of normal value. What is a grizzly bear's usual heart rate when not hibernating?

4. ### Health (Ms. Sue)

1. Summarize the steps to designing a fitness program. A: The steps to designing a fitness program. First, you must determine your resting heart rate. Once you have determined your resting heart rate, you need to calculate your

1. ### Math

During exercise, the recommended maximum heart rate in beats per minute is modeled by the formula M=176-0.8A, where M is the maximum heart rate and A is the person’s age. Approximately, at what age would you have a recommended

2. ### Math.

For question 1-4 for the interest. All rates are annual interest rates. 1) principal, \$400 rate, 5% time, 1 year. a. \$10 b. \$20 c. \$40 d. \$200 2) principal, \$1,000 rate, 8.5% time, 3 years a. \$255 b. \$170 c. \$22.5 d. \$17 3)

3. ### College Algebra

Kevin wants to keep his heart rate at 160 beats per minutes. During his workout he counts 25 beats in 10 seconds. A. How many beats per minute is this? b. Should he workout a little harder (is he not at least at his target heart

4. ### math?

1.How are the two statements given below related to each other? x: if you run for 10 minutes, then you will raise your heart rate. z: if you do not run for 10 minutes, then you will not raise your heart rate. A) Z is the

1. ### help please

Devon's target heart rate zone is 140bpm—177bpm. Julian's target heart rate zone is 148bpm—181bpm. They stop running and take their pulse, and both count the heart rate at 173bpm. If they decrease their heart rates by 20bpm,

2. ### Psy

A researcher is measuring the heart rate of subjects as an index of anxiety. In this study, heart rate is 1) negatively correlated with anxiety 2) an independent variable 3) an operational definition of anxiety 4) a confounded

3. ### calculus

Stefan’s Law states that a body emit radiant energy to a sink at absolute zero according to the formula R = kT4, where R is the measure of the rate of emission of the rate of energy per square unit of area, T is the measure of

4. ### math, probability

Two cards are drawn without replacement from a well-shuffled deck of 52 playing cards. a. What is the probability that the first card drawn is a heart? b. What is the probability that the second card drawn is a heart if the first