машина двигаясь 3 часа со скоростью y км/ч и 6 часов со скоростью x км/ч, прошла путь равный s км.Составьте формулу выражающую s через y и x.Помогите пожалуйста

Would like to ask you to our school e-books for each student. Because all of the books are very heavy. And therefore, bags and backpacks difficult to wear as what our health at risk. Still would like that would be in our school cafeteria food here was the same as in the American school canteens. I hope that in our school heating included in stronger.
And of course I would like to go and see " the Winter Olympic games2014 inSochi.

I would like to ask you for our school e-books for every student. Because all the books are very heavy. So backpacks nosit.Iz difficult due to which our health threat. Still like that would be in our school canteen fed as well as in American school cafeterias. I wish that our school heating included in stronger.

  And of course I would like to go and see "The Winter Olympic Games 2014" inSochi.

проверьте пожалуйста отрывок из сочинения . Это типо письмо деду морозу =DDD
 Выручайте )))

Можно ли определить падеж у несклоняемых существительных?

Задайте формулой линейную функцию, график которой проходит через точку B(-2;4) и парралелен прямой y=-2x+6

Помогите, пожалуйста.Очень надо, немогу решить.

напишите слова с падежными окончаниями