What is Sonya's age minus Dave's age in terms of d?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Study for the PSAT 8/9 Math Test. Practice with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What is Sonya's age minus Dave's age in terms of d?

Explanation:
Subtracting expressions that share the same variable lets you combine like terms. If Sonya’s age is 3d and Dave’s age is d, then Sonya’s age minus Dave’s age is (3d) − (d) = 2d. The d stays as a factor, showing the difference scales with d. So the expression for Sonya’s age minus Dave’s age is 2d.

Subtracting expressions that share the same variable lets you combine like terms. If Sonya’s age is 3d and Dave’s age is d, then Sonya’s age minus Dave’s age is (3d) − (d) = 2d. The d stays as a factor, showing the difference scales with d. So the expression for Sonya’s age minus Dave’s age is 2d.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy