Question

Marilyn and Tiara went for jogging every day. They increased the number of minutes of jogging every week as described below:

Marilyn: Jogged for 10 minutes every day in the first week, 20 minutes in the second week, 40 minutes in the third week, and 80 minutes in the fourth week.

Tiara: Jogged for 10 minutes every day in the first week, 20 minutes in the second week, 30 minutes in the third week, and 40 minutes in the fourth week.

Which statement best describes the methods used by Marilyn and Tiara to increase the time they spent jogging?
Marilyn's method is linear because the number of minutes increased by an equal factor every week.
Tiara's method is linear because the number of minutes increased by an equal number every week.
Both Tiara's and Marilyn's method is exponential because the number of minutes increased by an equal number every week.
Both Tiara's and Marilyn's method is exponential because the number of minutes increased by an equal factor every week.

Answer 1

Based on the given details given above about the difference between Marilyn and Tiara's time of jogging everyday, the statement that best describes the methods used by Marilyn and Tiara to increase the time they spent jogging is this: Both Tiara’s and Marilyn's methods are exponential because the number of minutes increased by an equal number every week. The answer would be the third option. Hope this helps.

Answer 2

Tiara's method is linear because the number of minutes increased by an equal number every week.

Explanation:

Marilyn: Jogged for 10 minutes every day in the first week, 20 minutes in the second week, 40 minutes in the third week, and 80 minutes in the fourth week.

Her increase is exponential as we can see that the next time is two times the earlier time.

`10*2=20`

`20*2=40`

Tiara: Jogged for 10 minutes every day in the first week, 20 minutes in the second week, 30 minutes in the third week, and 40 minutes in the fourth week.

Her increase is linear in nature as it is gradually increasing with value 10.

`10+10=20`

`20+10=30`

`30+10=40`

So, as per the situation, the correct answer will be - Tiara's method is linear because the number of minutes increased by an equal number every week.