Question

Ever since Renata moved to her new home, she's been keeping track of the height of the tree outside her window.
H(t)H(t)H, left parenthesis, t, right parenthesis models the height of the tree (in centimeters), ttt years since Renata moved in.
H(t)=210+33tH(t)=210+33tH, left parenthesis, t, right parenthesis, equals, 210, plus, 33, t
How fast does the tree grow?
centimeters per year....................there is no diagrams