Вычислить значение производной f(x)= (4x-3)(3+4x)

Помогите пожалуйста Вставить пропущеное

1. Our Deputy Director is in the _ office.They are discussing a new plan

a)general's manager b)general manager's c)general managers'

2.The level of the platforms makes it _ to get on and off with the luggage

a)most easy b) easier c) more easy

3.The Ritz is a very expensive hotel.-Yes,it's _ hotel in London

a)the most expevsive b)more expensive c)expensive

4.The _ way to travel is by air

a)conveniest b)most convenient c)more conveniently

5.The summer is cool and travelling by train can be _

a)easy b)the easiest c)easier

6.What is the secretary busy _ now?

a)with b)on c)in

7. _ Elbrus is the highest peak of the Caucasian Mountains

a)an b)the c)-

8.He flew from London to _ orly Airoport

a)the b)an c)-

9.He sailed from Southampton down _ English Channel

a)- b) the c)an

10.Mr.Jenkins reads _ Daily Telegragh but his wife reads _ Times

a)the b)a c)- 

В художественной галерее выставили 20 картин,из них 6 портретов,остальные-пейзажи.На сколько больше выставили пейзажей,чем портретов.