The correct option is C Yes. The equation is h=50+12d, where, h is the height in cm, and d is the number of days.
Let, number of days =d
Height of the plant =h cm
On the 0th day, height =50 cm
Each day its height increases by 0.5 cm.
∴ In d days, the height will increase by (0.5×d) cm.
Hence, total height after d days =(50+0.5×d) cm
This is the required function.
As the exponents of the variables are 1, this is a linear function.
Also, the dependent variable y cannot have more than one value for a particular d.