A merchant sells goods which cost $240 for $299. What percentage is his profit of the cost price?​

what am i trying to find out. you didn't put up the whole question.

step-by-step explanation:

your correct answer is c. he organized a political resistance group based on islam.

im sorry for the poor quality answer.

answers

\3. yes the presentation (i.e. odd numbers being written as differences of two squares) is possible for all odd natural number however the presentation may not be unique. for example,  57=112−82=292−28257=112−82=292−282.

\4. 2 can't be written as a difference of two squares because 4-1=3 and 1-1=0 and the difference of squares grows to integers larger that 3.

can i get some in proving questions 1 and 2?