evaluate a linear function word problems

Question

This equation shows how the distance Gabe has cycled depends on the number of trips he has taken to work.

d = 3t

The variable t represents the number of trips he has made, and the variable d represents the total distance cycled in kilometers. After 6 trips to work, how many kilometers will Gabe have cycled in total?

Answer 1

d = 3t

The variable t represents the number of trips he has made, and the variable d represents the total distance cycled in kilometers. After 6 trips to work, how many kilometers will Gabe have cycled in total?

They are telling t = 6 so

d - 3(6)

d=18