Ted bought a fishing pole for $35.99, bait for $16.99, and a pair of shorts for $21.99. He had a coupon for 50% off the shorts only. What was the total cost of Ted’s items before tax?

Calculate the shorts price first
Since the short is 50% off, you can just divide the shirt cost by 2
21.99/2 = $10.99500 for shorts
Add all the items together now
35.99 + 16.99 + 10.99500
= 63.97500
Solution: $63.98

It means if x is -1 what is y then . check -1 on x axis and then check the value of y when x is -1

Prove that every odd prime number can be written as a difference of two squares.prove also that this presentation is unique.is such presentation possible if p is just an odd natural number? can 2 be represented this way?

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?