Exercise 2.2

Find the value of the linear polynomial 5x − 3 if:x = 0

Find the value of the linear polynomial 5x − 3 if:x = −1

Find the value of the linear polynomial 5x − 3 if:x = 2

Find the value of the quadratic polynomial \(7s^2 − 4s + 6\) if:\( s = 0\)

Find the value of the quadratic polynomial \(7s^2 − 4s + 6\) if:\( s = −3 \)

Find the value of the quadratic polynomial \(7s^2 − 4s + 6\) if:\(s = 4\)

The present age of Salil’s mother is three times Salil’s present age. After five years, their ages will add up to 70 years. Find their present ages.

The difference between two positive integers is 63. The ratio of the two integers is 2:5. Find the two integers.

Ruby has 3 times as many two-rupee coins as she has five-rupee coins. If she has a total of ₹88, how many coins does she have of each type?

A farmer cuts a 300 feet fence into two pieces of different sizes. The longer piece is four times as long as the shorter piece. How long are the two pieces?

If the length of a rectangle is three more than twice its width and its perimeter is 24cm, what are the dimensions of the rectangle?