Семья Ромашовых состоит из 4 человек. Отец работает на металлургическом комбинате сталеваром, его месячная зарплата равна 57000 рублей; мать работает учителем русского языка в школе, ее месячная зарплата равна 42000 рублей; старший сын учится в техникуме и подрабатывает в магазине, его зарплата равна 28000 рублей; младший сын ходит в детские ясли. В этом году семья несла дополнительные расходы:
Оплата содержания сына в платном детском саду ( 5000 рублей в месяц)
Обучение матери на платных курсах (компьютерная грамотность). Стоимость обучения 2500 рублей в месяц. Учеба длилась 5 месяцев
Покупка загородного дома за 832000 рублей.
Рассчитать величину НДФЛ, налогового вычета и сумму возвращенного НДФЛ за год

Спрос рождает предложение
Фирма «Мориарти» является монополистом на региональном рынке свежих слив. Функция спроса на сливы в регионе имеет вид $q_{d}(p) = 180 − p_{d}$ (при ценах выше 180 потребители ничего не покупают), где $p_{d}$ — цена на региональном рынке. Фирма владеет одним заводом, издержки производства слив на котором зависят от объема выпуска следующим образом:
TC1(q1)={q21+12q1+2017,0если q>0если q=0

У фирмы есть возможность открыть второй завод, функция издержек на котором будет такой же, как на первом (объем выпуска на втором заводе обозначим за $q_{2}$).
а) (10 баллов) Является ли открытие второго завода оптимальным решением с точки зрения максимизации прибыли?
б) (20 баллов) Фирма «Мориарти» рассматривает возможность выхода на рынок соседнего региона. Если она это сделает, то останется монополистом в своем регионе, а в соседнем сможет продать любой объем выпуска $q_{f}$ по цене 120.Стоит ли фирме выходить на новый для нее рынок? Если да, то стоит ли при этом открывать второй завод?

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