Answer:
5 + 2x
45 cm
Explanation:
Given that:
Height of plant today = 5cm
Growth rate of plant per day = 2cm
A.)
The height of plant after x days :
Height of plant today + (growth rate * number of days)
5cm + 2x
C.)
Height of plant after 20 days :
x = 20 days
5cm + 2(20)cm
5cm + 40cm
= 45 cm