The absolute value function is one-to-one, while the greatest integer function is many-to-one.

a. true
b. false

Option B that is false.

Step-by-step explanation:

The above statement is false because

Absolute value function is not one-one

For example:

|x|=x  and |-x|=x

We are getting one vale at two different points.

And greatest integer function is many to one that is correct because

it will consider only the integer part

for example:

[1.05]=1 ,[1.02]=1 ,[1.06]=1 ,[1.08]=1

Hence, many to one

Nut one if false one is true

Hence, entirely it would be a false statement

the answer is 15% decrease

over the argument its not good to fight.