Plz me! what is the equation for this number 4? plz i need this is due plz ,!

15 days

Step-by-step explanation:

The height of the sunflower is a function of time; the flower grows 4 cm per day.  The constant of proportionality is thus (4 cm) / (1 day), or 4 cm/day.

The equation relating height to days is thus:

h(d) = (4 cm/day)d, where h is the height in cm and d is the number of days that have passed by.

When (after how many days) will the sunflower have grown to be 60 cm tall?

Solve h(d) =(4 cm/day)d for the number of days, d:

Let h(d) = 60 cm = (4 cm/day)d.

Dividing both sides of 60 cm = (4 cm/day)d by (4 cm/day), we get:

 60 cm

= 15 days (answer)

4 cm/day

2nd one in the first row is correct