Test-Taking Tips
- Reread the test item.
- Use the Test-Prep strategy.
- Apply appropriate rules,
definitions, properties, or
strategies. - Analyze your answers.
70 Chapter 3 pages 77–78 for exercise sets.Read the test item for a general idea of the problem.- Reread the test item carefully and ask yourself
questions to clarify the meaning of the text.
Write an equation to relate the cost of the CDs plus
shipping to the total cost. - Write a verbal model to describe the problem.
3 times the cost of each CD shipping total cost
Solve the problem.- Translate the verbal model into an algebraic equation
and then solve.
Let cthe cost of each CD.
To solve the equation, remember to isolate the variable
on one side.
Item 1 is partially worked out for you.Solve. Use a verbal model to help write an algebraic expression or sentence.
1.Tamara ordered 3 CDs. Each CD cost the same amount.
With a shipping charge of $5, the total cost was $41.
How much did each CD cost?
Show all your work.Check your work. Make sure you show all your work.
- Analyze your answers. Do they make sense?
Substitute the value for each CD back into the equation.
Is the result a true statement?
2.Will needs to survey at least 20 people for a science project.
He has surveyed 16 people so far. How many more people does
Will need to survey?3.The cost of a gallon container of apple juice is $3.50. What is
the maximum number of containers you can buy for $15?4.The temperature at a ski resort in the early morning is 3
Fahrenheit.
By mid-morning, the temperature rises to 10 Fahrenheit.
By how many degrees Fahrenheit does the temperature increase?5.This month Clara worked 4 hours less than twice the number of hours
she worked last month. Write an expression for the number of hours
Clara worked this month.6.It costs $3 per trip to ride the bus. You can buy an unlimited bus pass
for $125 that pays for all the rides you take during a 30-day period.
What is the least number of rides you would have to take in a 30-day
period to save money by buying the unlimited pass? What inequality
can you solve to help you answer the question?