4-3 Solve by Multiplying/Dividing. Ex. 1 Multiplying by Positive.

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Presentation transcript:

4-3 Solve by Multiplying/Dividing

Ex. 1 Multiplying by Positive

Ex. 2 Multiplying by a Negative

Your Practice

Ex. 3 Solve by Dividing

Your practice

Ex. 4 Story Problems  The student council votes to buy food for a local food bank. A case of 12 jars of spaghetti sauce costs $ What is the greatest number of cases of sauce the student council can buy if they use at most $216 for this project?  Do we care how many jars?  No  How many cases? cc  How much per case?   How much to spend?  $216

Your practice  The science club charges $4.50 per car at their car wash. Write and solve and inequality to find how many cars they have to wash to earn at least $300.  How many cars? cc  How much per car?  4.50  What is goal?  At least $300