OpenStudy (alivejeremy):

Jeannette is participating in a hot dog eating contest. She has already eaten 20 hot dogs but needs to eat more than 34 hot dogs to win. Jeannette is eating 3.1 hot dogs per minute. Which of the following inequalities could be used to solve for x, the number of minutes Jeannette needs to eat hot dogs to win the contest? 3.1x > 20 3.1x > 34 3.1x - 20 > 34 3.1x + 20 > 34

1 year ago
OpenStudy (mathmale):

What do you already know that would help you solve this problem? What do you need to know? Once you've answered these questions, others or I could help you get started.

1 year ago
OpenStudy (mathmale):

Use the "rate of change" (or just "rate") below:\[\frac{ 3.1hotdogs }{ \min }\]

1 year ago
OpenStudy (alivejeremy):

wow

1 year ago
OpenStudy (mathmale):

(rate)*(time)=number of hotdogs eaten

1 year ago
OpenStudy (alivejeremy):

oh

1 year ago
OpenStudy (mathmale):

Wow. Isn't Equation Editor nice? You, too, could learn how to use that.

1 year ago
OpenStudy (anonymous):

So the rate here is 3.1 hotdogs/minute. For 20 hotdogs, you have to divide 20 by 3.1 to find how much minutes did she take now. Tell me the answer

1 year ago
OpenStudy (mathmale):

Amount = rate * time, yes. solving for time: \[time=\frac{ Amount }{ rate }\]

1 year ago
OpenStudy (alivejeremy):

3.1x - 20 > 34

1 year ago
OpenStudy (anonymous):

Great you figured it out

1 year ago
OpenStudy (alivejeremy):

3.1x + 20 > 34

1 year ago
OpenStudy (mathmale):

I won't pick on you this time, but next time please show the work you did to get your answer. Let's move on to the next problem.

1 year ago
OpenStudy (alivejeremy):

ok

1 year ago
OpenStudy (anonymous):

Im ready for the next question

1 year ago
OpenStudy (alivejeremy):

Karla's doctor recommended her daily caffeine intake stay under 500 milligrams. Today, Karla has already had 430 milligrams of caffeine. Her favorite soda contains 35 milligrams. Which of the following inequalities could be used to solve for x, the number of sodas Karla can still have today? 35x + 430 < 500 35x < 500 35x - 430 < 500 35x < 930

1 year ago
OpenStudy (mathmale):

Post it separately, please, not here.

1 year ago
OpenStudy (mathmale):

You know by now, jeremy: I'd like to see your efforts and to read your questions before infinity or I start helping. Apply what you've learned from previous problem solving to solve this new problem.

1 year ago