<p>Can someone give me a step by step explanation for all these questions?!</p>
<ol>
<li><p>The Friends of the library meet on the third Sunday of every month. What is the latest possible day of the month that this meeting could take place?
(A) The 20th
(B) The 21st
(C) The 22nd
(D) The 23rd
(E) The 24th</p></li>
<li><p>If (x+y)(x^2-y^2)=0, which of the following must be true?
(A) x=y
(B) x= -y
(C) x^2=y^2
(D) x^2=-y^2
(E) x^3=y^3</p></li>
</ol>
<p>7) If July 1 falls on a Monday, then August 3 of the same year falls on what day of the week? (July has 31 days.)
(A) Tuesday
(B) Wednesday
(C) Thursday
(D) Friday
(E) Saturday</p>
<p>For number 20, I’m assuming you mean x, y are reals. If so, then the solution follows:</p>
<p>either x=-y</p>
<p>or x=y</p>
<p>thus: x^2=y^2, so (C)</p>
<p>However if x, y are matrices, etc… then none of the following must be true.</p>
<p>7) (easiest way)</p>
<p>July 1: Monday
July 8: Monday
July 15:
July 23:
July 30: Monday
July 31: Tues
August 1: wed
August 2: thurs
August 3: friday</p>
<p>(D)</p>
<p>for number 13, I don’t feel like doing it, but I can tell you that a solution exists.</p>
<p>I disagree for the second question:</p>
<p>July 1: Mon
J 8:
J15:
J <em>22</em> :
J 29 :
J 30 = Tues, J 31 = Wed, Aug 1 = Thur, Aug 2 = Fri, Aug 3 = Sat</p>
<p>I think sheepgetkilled accidently added 15 to 7 to get 23</p>
<p>yeah i have nooo idea how to do number 13 lol</p>
<p>bump for question 13!!!</p>
<h1>13 is 21st</h1>
<p>7th(1st Sunday)
14th(2nd Sunday)
21st(3rd Sunday)</p>
<p>August 3rd is a Saturday</p>