Section 1.6 Using Equations to Solve Problems
Example 1 : buying CDs Two students walk into a CD store. The second student buys 3 more than twice the number of CDs the first student buys. All together they buy 18 CDs. How many CDs did each student buy?
Example 1 : buying CDs Two students walk into a CD store. The second student buys 3 more than twice the number of CDs the first student buys. All together they buy 18 CDs. How many CDs did each student buy?
Example 2: Designing a kennel A disgruntled dog owner has 28 feet of fencing to make a rectangular kennel. If he wants the kennel to be 6 feet longer than it is wide, find its dimensions.
Example 2: Designing a kennel A disgruntled dog owner has 28 feet of fencing to make a rectangular kennel. If he wants the kennel to be 6 feet longer than it is wide, find its dimensions.
Example 3: Pierogi eating Jordan and Pete enter a pierogie eating contest. Pete eats 10 pierogies less than Jordan eats. If each pierogie is $0.35 and they spend a total of $18.90, how many pierogies did each person eat?
Example 3: Pierogi eating Jordan and Pete enter a pierogie eating contest. Pete eats 10 pierogies less than Jordan eats. If each pierogie is $0.35 and they spend a total of $18.90, how many pierogies did each person eat?