Question

The Relation between the height of the plant (y in cm) with respect to exposure to sunlight is governed by the following equation y = 4x - `1/2 x^2` where x is the number of days exposed to sunlight.

What is the number of days it will take for the plant to grow to the maximum height?

Options

• 4

• 6

• 7

• 10

Answer 1

4