Melissa, Juan, Sara, and Marsha.
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The best description of the car's motion as shown in the graph is: A. It travels for 1 hour, then stops for 1 hour, and finally travels again for 3 hours.
<h3>How to Analyze a Distance-Time Graph?</h3>
In a distance-time graph, an horizontal line implies no distance was covered within that time frame, meaning there was a stop.
Thus, in the graph given, the stop occurred 1 and 2, which is equivalent to an hour. From 2 to 5 on the x-axis means there was movement for up to 3 hours.
Therefore, the best description is: A. It travels for 1 hour, then stops for 1 hour, and finally travels again for 3 hours.
Learn more about distance-time graph on:
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Answer
Find out the how far into the country does he go.
To proof
Let us assume that the total diatance travelled into the country be x .
Formula

As given
A cyclist rides into the country at an average speed of 10 miles per hour. When his bicycle gets a flat tire,
he walks it back at an average speed of 3 miles per hour.
If he returns home 6 and a half hours after he starts i.e the total time including the bike time and walk time of the cyclist be 6.5 hours.
Than the equation becomes

L.C.M of (10,3) = 30
Than the equation becomes
3x +10x = 195
solving
13x = 195

x = 15 miles into the country
Hence proved
Answer:t=9.6 minutes
Step-by-step explanation:
Given
mass of element is 
Decay rate 
and we know
Amount of exponential decay is given by
![A=A_o[1-r]^t](https://tex.z-dn.net/?f=A%3DA_o%5B1-r%5D%5Et)
Where 



Substituting values we get
![\Rightarrow 30=740[1-0.284]^t](https://tex.z-dn.net/?f=%5CRightarrow%2030%3D740%5B1-0.284%5D%5Et)


taking log both sides we get


