Exploring Unit 6 Lesson 17: Adding and Subtracting Rational Expressions

This video tutorial by Matt covers Unit 6, Lesson 17 on modeling with inequalities. It explores real-world problems such as ordering sandwiches and loading boxes in an elevator, emphasizing the importance of logical solutions. The video includes class activities, a summary of key concepts, and homework problems to reinforce learning.

What does 'x' represent in the sandwich ordering scenario?

• The cost of one sandwich

• The total amount collected

• The number of sandwiches ordered

• The price of sandwiches in dollars

Tags

CCSS.HSA-SSE.A.1A

Can the stage manager order a fractional number of sandwiches?

• Yes, exactly 13.86 sandwiches

• No, only whole numbers are logical

• Yes, but only if the shop agrees

• No, because sandwiches are free

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the maximum number of 48-pound boxes the mover can load into the elevator?

• Exactly 37.8125 boxes

• No more than 37 boxes

• At least 38 boxes

• Exactly 38 boxes

In the classroom activity, what does the teacher ask the students to do?

• Memorize the inequalities

• Ignore the context of problems

• Work in pairs without sharing data cards

• Solve inequalities alone

Why is it important to decide what quantity a variable represents in an inequality?

• To confuse the students

• To make the inequality look complex

• To correctly connect quantities in the situation

• To make the math easier

Tags

CCSS.6.EE.B.8

What does the equation '12 + 3n > 28' represent in the field trip scenario?

• Total distance traveled

• Number of seats per car

• Total number of students

• Number of cars needed

Tags

CCSS.7.EE.B.4B

Why can't you have a third of a car in the field trip scenario?

• The question is about buses

• Cars are always available in plenty

• It's not logically possible

• Cars can be divided

How are the two inequalities about the cafeteria tables and rainwater barrels similar?

• Both are unrelated to real life

• Both require whole numbers

• Both deal with the same numbers

• Both have different variables

What is the weight decrease of a person from Earth to the Moon?

• 200 pounds

• 167 pounds

• 84%

• 33 pounds

Tags

CCSS.8.EE.C.7B

What percentage did the weight decrease when moving from Earth to the Moon?

• 50%

• 83.5%

• 100%

• 33%

Tags

CCSS.6.RP.A.3C