Find the value of the expression a? – b2 for a = 2 and b=1

Step-by-step explanation:

We need to find the value of the below expression i.e.

when a = 2 and b = 1.

So,

Put a = 2 and b = 1 in the above expression. So,

Hence, the value of the expression is equal to 3.

Richard starts reading a novel. On first day he read 5 pages and after that he read 3 pages of the novel each day. He want to reach the the 100th page of the novel.. How many days he will take to cross read more than 100th page?

Solution:- Let x be the number of days he read more than 100 pages, then according to the question, we have the following inequality as

Subtract 5 from both sides, we get

Divide 3 on both the sides, we get

Hence, At 32th day he will read the 100th page

the number of pages he will read till 32th day= 3(32)+5=96+5=101 which is more than 100.