Below are some problems from your textbook that you can work to prepare for the Unit 3 test. Answers will be posted on this blog at 7:00 PM on Thursday, October 27. Ms. Skinner and Mr. Roeser will be available from 7:00 to 9:00 PM to respond to questions that you may have. Send your questions as a comment to the post with the answer key, not as an e-mail. THIS PROBLEM SET IS NOT A SUBSTITUTE FOR THE STUDY GUIDE. THERE ARE ITEMS ON THE STUDY GUIDE THAT ARE NOT COVERED HERE.
p. 148 Oral Exercises
#2 – The textbook uses “similar monomials” to mean like terms.
In addition to naming the like terms, tell how you know which terms are like terms (go back to the definition of like terms).
#5, 7, 9 – Just state the degree of the entire monomial.
#12, 14, 16 – Rewrite in standard form, if necessary. Then classify each polynomial by degree and number of terms using vocabulary, not numbers.
p. 149 Written Exercises
#43 – Be sure your answer is in standard form.
pp. 153-154 Written Exercises
#20, 34
Also, state the rule for multiplying monomials.
p. 157 Written Exercises
#16, 28, 48
Yes, #48 is a little tougher, but just apply the same Multiplication Laws of Exponents that you used for the first two exercises in this set.
pp. 159-160 Written Exercises
#17, 40
pp. 162-163 Written Exercises
#16, 34 – Again, write answers in standard form
p. 177 Self-Test 3
#3 – Show all four steps as instructed.
Give the problems a try and then let me know if you have any questions.
ReplyDeleteMrs. Skinner
I am having trouble understanding how to set up #3
ReplyDeleteLike finding the area of the border so I can solve the problem.
ReplyDeleteMatt - Draw the diagram first!! The length of the "smaller" would be w+7 while the width is w. The "larger would then have a length of w +9 while it has a width of w+2. Drawing a labeling the diagram is the real key!!
ReplyDeleteI got the length of the smaller and larger but I don't know how to set up the equation
ReplyDeleteThink Area(of the Larger) - Area(of the Smaller) = Area(of the border)
ReplyDeleteSo the equation would look like...
ReplyDelete(w+9)(w+2) - w(w+7) = 58
But how do I get the area of the border?(I think this was Matt's question) It says the area and the walk is 58 greater than pond area.
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteEster its all in the phrasing of the problem. It says "The area covered by the pond and the walk is 58 sq ft more than the area covered by the pond alone."
ReplyDeleteThe Pond AND Walk refers to the area of the whole space or the area (of the larger). So therefore the 58 sq ft refers to just the border