In Part 1, what expression represents the total height of the plant after
What phrase tells you that this situation should be represented by an inequality?
at least
Which inequality represents this situation? Why?
B.
How many months will it take for the plant to be at least 18 inches tall?
5 months.
What are some other numbers that are in the solution set for this problem? How do you know?
Possible response: 6, 7, 8, etc., because at any time after 5 months, the plant will be over 18 inches tall.
In Part 2, which equation represents the total number of pens (
The first equation,
Which equation represents the total amount that Jamie spent on pens and pencils?
The second equation,
How was the equation in Step 1 created?
Possible response: The first equation was solved for
What does
It means that Jamie bought 5 pens.
How can you determine how many pencils Jamie bought?
Substitute
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