Question

garret is partway through a 20 - minute bike ride. it takes 4 minutes for him to go a kilometer. suppose k is the number of kilometers garret has already biked.
the expression 4(5 - k) describes the number of minutes garret has left in his ride.
match each amount in the situation with the expression that represents it.

situation	expression
number of kilometers garret already biked	5
number of kilometers left in the ride	5 - k
number of minutes garret takes per kilometer	k

Explanation:

Step1: Analyze Total kilometers

The total time of the ride is 20 minutes, and it takes 4 minutes per kilometer. So total kilometers = total time / time per km = \( \frac{20}{4} = 5 \). So "Total number of kilometers in the ride" matches with 5.

Step2: Analyze Kilometers already biked

Given \( k \) is the number of kilometers Garret has already biked. So "Number of kilometers Garret already biked" matches with \( k \).

Step3: Analyze Kilometers left

Total kilometers is 5, and \( k \) is already biked. So kilometers left = total - already biked = \( 5 - k \). So "Number of kilometers left in the ride" matches with \( 5 - k \).

Step4: Analyze Minutes per kilometer

It is given that it takes 4 minutes for him to go a kilometer. So "Number of minutes Garret takes per kilometer" matches with 4.

Answer:

• Total number of kilometers in the ride: 5
• Number of kilometers Garret already biked: \( k \)
• Number of kilometers left in the ride: \( 5 - k \)
• Number of minutes Garret takes per kilometer: 4