Answer:
3cm and 4cm addition
7cm and 5cm subtract
2cm answer
Answer: 23.80
Step-by-step explanation:
2b - 6 = -4
2b = -4 + 6
2b = 2
b = 2/2
b = 1
1st one
Answer: Both plants grow at same rate ie., 4/3 cm per day
8 cm = 6 days
1 day = 1/6 x 8 = 4/3 cm
12 cm = 9 days
1 day = 1/9 x 12 = 4/3 cm