Can someone give me a hand would love it

Which number line correctly shows 0.8 + 0.3?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p. mc) knowing that it is going to rain tomorrow, and going to bed before 9 p. md) knowing that you have a test in school tomorrow, and studying thw night before