King kong went to the nursery and bought a 70 ft tall tree for his monkey friends to climb on.

after planting the tree, king kong made a table to record the height, h, of the tree, t years after it was planted.
t
0
1
2
3
4
h
70
85
100
115
130
(a) use words to describe the relationship between the height of the tree and the number of years since it was planted.
(b) use an equation to illustrate the relationship between the height of the tree and the number of years it has been planted.