Question

function notation word problems
google classroom
microsoft teams
alek went for a walk.
d(t) models the distance alek walked (in kilometers) after t hours.
what does the statement d(0.5) < d(1) - d(0.5) mean?
choose 1 answer:
a the distance alek has walked after walking for an hour is greater than the distance he has walked after half an hour.
b the distance alek walked during the first half hour is shorter than the distance he walked during the following half hour.
c the time it took alek to walk the first half kilometer is shorter than the time it took him to walk the following half kilometer.

Explanation:

$D(0.5)$ is the distance walked in 0.5 hours. $D(1)-D(0.5)$ is the distance walked from 0.5 hours to 1 hour. The inequality means the distance in the first half - hour is less than the distance in the second half - hour.

Answer:

B. The distance Alek walked during the first half hour is shorter than the distance he walked during the following half hour.