Some questions on tests ask you to write a short response. Short response questions in this textbook are usually worth 2 points. To get full credit for an answer, you must give the correct answer (including appropriate units, if applicable) and justify your reasoning or show your work.
TIP 1 If you write the correct expression but make an error when calculating your answer, you might earn one point.
Mandy is selling copies of historic photos to raise money for a class trip. She can order each photo for $2.75 and each frame for $4.25. Mandy plans to sell each photo with a frame for $10.00. Write an expression to represent the total amount of money Mandy will have after selling n framed photos. Evaluate your expression for 12 framed photos. Show your work.
TIP 2 You also might earn one point if you do not write an expression but you show a method for getting to the correct answer.
Solution
She makes 3n after selling n framed photos.
She earns 3(12) = $36 after selling 12 framed photos.
Think It Through
It costs Mandy $2.75 + $4.25 = $7 to make each framed photo. She makes
Vocabulary Builder
As you solve test items, you must understand the meanings of mathematical terms. Match each term with its mathematical meaning.
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Multiple Choice
Read each question. Then write the letter of the correct answer on your paper.