Математическая логика

Даны шесть функций: 1) у=х; 2) у=3-х; 3) у=2 х в квадрате; 4) у= 4/х; 5) у=2х+1; 6) у= корень из х. Выделите из них те функции, которые являются убывающими

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вот 1.вступление 2.завязка 3.кульминация 4.развязка 5.послесловие

Our history More than Five Years of Experience Founded in 2009, Dudbang Technology Co. Limited is one of the leading manufacturers that specializes in designing, manufacturing and exporting all kinds of car holders, phone holders, and tablet holders. Developed and Distributed a Wide Range of Products As one of the leading car accessories suppliers in China, we have developed and distributed a wide range of products to over 30 countries in Europe, and more than 15 countries across the Americas and Asia. Providing Best in Class Products for Our Customers Supported by a strong R&D team, SST has been developing high end products using cutting edge manufacturing and testing equipment. Together with our ISO policies and strict QC/IQC system, we continually provide best in class products for our customers. With our large scale production, we can ensure lower cost with competitive prices. We also have a dedicated after sales technical support team to assist our customers in any feedback that they have, we are committed to deliver to our customers' good service with high quality products. OEM and ODM Orders are Welcome We are open to working with business partners who are interested in developing new markets. We also warmly welcome OEM and ODM orders. We look forward to your queries and hope to hear from you soon. We will be expanding into the region and do have plans to setup offices in the US, Europe and Asia. If you have any queries, feel free to contact us. Our factory 1) We have specialized in cell phone accessories and other digital products for many years. 2) Own registered brand “Dubang”. 3) Located in Dongguan . Welcome you to our factory. 4) Strong R&D support: All the products is Research & Develop & Produce by our own factory 5) Long Term Supply Chain: We have regular and stable supply for the product materials and accessories, which can save more time and cost for your ordering.6)Professional QC system,every product will be checked three times before they go out Our product Providing Best in Class Products for Our Customers Supported by a strong R&D team, SST has been developing high end products using cutting edge manufacturing and testing equipment. Together with our ISO policies and strict QC/IQC system, we continually provide best in class products for our customers. With our large scale production, we can ensure lower cost with competitive prices. We also have a dedicated after sales technical support team to assist our customers in any feedback that they have, we are committed to deliver to our customers' good service with high quality products.We have suction mount,Hose bracket,car air vent phone holder,CD outlet phone holder and tablet holder,over 50 kinds of products to suit your taste.China In Car Windshield Holder website:http://www.chinacarmount.com/

модель никак не можем. Помогите пожалуйста

шоколадной начинкой состовляло четыре седьмых от количества конфет с ореховой начинкой.Если из коробки выложить8 конфет с ореховой начинкой и добавить 1 конфету с шоколадной начинкой,то конфет с каждой начинкой станет поровну.Сколько всего конфет было в каробке?

а)сумму чисел х и у
б)произведение числа х и разности чисел 2у и z.

1) Разность двух сторон прямоугольника равна 7см, а его периметр равен 54 см. Найдите стороны треугольника.