Valerie eats chocolate(s) every hour. The graph below shows the total number of chocolate(s) Valerie will have eaten (y) in x hour(s). How many does she eat every hour?

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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

What is the value of the discrimination for the quadratic equation 0=×2+2+×2