Question

11)Evaluate 18xy-3x+2 for x=-1 and y=2

12)Mark on the number line the value of x that satisfy 4x>8

13)John's father is 5 times older than John and John is twice as old as his sister Alice.In two years time,the sum of their ages will be 58.How old is john now?

14)sweety is twice as old as her friend Pushpa.Pushpa is 5 years older than Anju.Fill in the following table using this information.

Answer 1

11) 18xy-3x+2 , if x=-1 and y=2
Then,
[18×(-1)×2]-3×(-1)+2
(-36×3)+2
-108+2
- 106=ANS