Вопрос по экономике:

•Рынок товара представлен следующими функциями спроса и предложения: Qd=70-р, Qs=2×р-50, где Q – объем, р – цена товара. Цена товара может быть установлена на уровне: 30, 38, 45, 50 или 55 ден. ед. определите, в каком из указанных случаях объем потребления данного товара будет наибольшим (в ед. товара; в ден. ед.).

Вопрос по английскому языку:

Помогите с английским пожалуйста((

English for International Tourism Pre-Intermediate Unit Test 2B

Answer all 40 questions. There is one mark per question.

GRAMMAR: PRESENT SIMPLE AND CONTINUOUS

Complete the sentences (1–15) below. Choose the correct answer for each one.

1 Mary [doesn’t work / isn’t working] today. She has a college exam.

2 We [have / are having] a hire car for next weekend.

3 They [usually stay / are usually staying] on a resort near a beach.

4 I know it [costs / is costing] a lot but I love the food at this restaurant.

5 Cesar [doesn’t want / isn’t wanting] to travel by plane.

6 Jenny [always arrives / is always arriving] early to work.

7 [Do you travel / Are you travelling] business class today?

8 The manager [eats / is eating] lunch at the moment.

9 The hotel [doesn’t recruit / isn’t recruiting] new staff this month.

10 You [don’t need / aren’t needing] to check for another hour.

11 [Are you responsible / Are you being responsible] for transfers?

12 I [visit / ’m visiting] relatives this weekend.

13 [Do you know / Are you knowing] where the station is?

14 Mike [isn’t / isn’t being] a waiter.

15 What [do you do / are you doing] tomorrow evening?

Вопрос по математике:

Вопрос по геометрии:

Вопрос по алгебре:

X+y/12x:2x+2y/6y*8/y решите пожалуйста