Jan should expect 9 bushels of tomatoes this year
Solution:
Given that,
The number of the plants directly proportional to the number of bushels of tomatoes harvested
Let "y" be the number of plants
Let "x" be number of bushels of tomatoes harvested
Then,
y = kx -------- eqn 1
where, k is constant
Last year she planted 24 plants and harvested 12 bushels of tomatoes
Substitute y = 24 and x = 12 in eqn 1
During the season this year she has decided to only plant 18 plants
Plug in y = 18, k = 2 in eqn 1
Thus, he should expect 9 bushels of tomatoes this year