Answer:
f(h) = 11 + 1.2h
f(9) = 21.8 cm
Explanation:
let 'h' = height
height after 9 days:
f(9) = 11 + 1.2(9)
= 11 + 10.8
= 21.8 cm
the equation is 11+1.2d= h so the height after 9 days would be 21.8cm
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