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Question

1.Given that f (x)=5-2x, find

a)f (-2)
b)f 1 (x)


2.The Table shows the temperature in a number of cities at noon on a particular day.


Singapore 32 C
Moscow - 7 C
Cambridge -4.5 C
London 0 C


a)Which was the coldest city?
b)Find the difference in temperature between Singapore and Cambridge.
c)The temp. in L.A was exactly midway between the temp. in Singapore and Moscow. What was the temp. in Karachi?


3.
a)Simplify x(3x+2) – (2x+4)
b)Factorize Completely 3ap + 6p2
c)Solve the equation (y-2)2 = 25



4. A sum of money was divided between 3 people.
Angela received ½ of the money
Ben received ⅓ of the money.
Charles received the remainder.

a)Ben received Rs. 100.How much did Angela receive.
b)What fraction of the money did Charles receive?

Answer 1

I hope you don't think this hard. This is like 6th grade stuff.

Answer 2

1.(a) f(2)=5-2(2)
f(2)=5+4
f(2)=9

(b) f(1)=5-2(1)
f(1)=5-2
f(1)=3


2.(a)Moscow -7
(b)tempt difference =
(c)

3 (a) x(3x+2)-(2x+4)
3x^2+2x-4
3x^2-4

(b) 3ap+6p^2
p(3a+6p)

(c) (y-2)2=25
on expansion, 2y-4=25
2y=25+4
2y=29
divide through by 2
2y/2=29/2
y=14.5

4. (a) Let the money=X
Angela (A) receives 1/2
Ben (B) receives 1/3
Charles (C) receives Remainder
Since C received Rs.100 which happens to be 1/3 of the Money,
1/3ofX=100,then X=3*100=300
i.e X=300
Angela receives 1/2of 300=150
A=150

(b) X=1/2+1/3+C
300=150+100+C
300=250+C
subtract 250 from both sides
300-250=250-250+C
C=50

Answer 3

1a) f(-2) = 5-2x
= 4-2(-2)
= 4+4
= 8
b) i couldnot get what u r asking for?

2a) moscow
b) 32-(-4.5) = 32+4.5 = 36.5
c) l.a.??

3a) x(3x+2)- (2x+4)
3x2+2x-2x-8 [x2=x^2]
3x2-8
b)3ap-6p2
3p(a-2p)
c)(y-2)2=25
y-2=5 (Square on the r.h.s. becomes root on l.h.s.)
y=7


4 let the total sum be x.
if 1/3 of x=100 then,
x= 300.
so angela recieved 1/2 of 300=150
and charles got 300-(150+100)=50

Answer 4

1. (a) = 1
(b) = -2

2. (a) = moscow
(b) = 36.5 C
(c) = 19.5 C

3. (a) = 3x2 - 4
(b) = 3p[a+2p]
(c) => y = 14 1/2 (14.5)

4. (a) => Angela received Rs 150
(b) => Charles' fraction = 1/6

Answer 5

These are too trivial to be interesting.

Answer 6

too easy baba.
google it u can find answers.