A koala sleeps 18 hours a day. Wrte an equation using two variables to show the relationship between the number of days the koala sleeps, d, and the total amount of time the koala sleeps, t, in d days.
Let's assume that the koala sleeps for a constant 18 hours each day. We can write an equation to show the relationship between the number of days the koala sleeps, d, and the total amount of time the koala sleeps, t, in d days.
We can express the total amount of time the koala sleeps as the product of the number of days the koala sleeps, d, and the number of hours the koala sleeps per day, 18.
Therefore, the equation is:
t = 18d