The last answer says
Amount of growth in inches per day of the second plant

h₁(d) = (1 + 0.20)^d
h₂(d) = 1.75(1 + 0.20)^d
h₂(0) = 1.75(1 + 0.20)⁰ = 1.75
Answer: initial height of the second plant, in inches, second choice