Answer:
3x + 61 ≤ y will be the expression.
Explanation:
A lanscaper is planting a tree that is initially 61 cm tall.
Tree will grow with a rate of 3 cm per month for x months.
By this rate tree will grow 3x cm.
Since initial size of the tree was 61 cm so total length after x months will be = 3x + 61
This height of tree is at most y cm, that means height of the tree will be less than equal to y.
So the expression will be 3x + 61 ≤ y