Variables in Real-World Equations
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Objective
I can Solve word problems leading to equations of the form px + q = r and p(x + q) = r, where p, q, and r are specific rational numbers. Solve equations of these forms fluently.
Part 1 of 4
Warm-up video
Khan Academy · 4:45Vetted channel
We don't generate video — this one is by Khan Academy on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
Marcia makes $27 on every computer she sells, and her monthly expenses are $10,000.
- 2
To calculate Marcia's profit, we can use the equation: Profit = 27x - 10,000, where x is the number of computers sold.
- 3
To make a profit, Marcia needs to sell at least 371 computers in a month.
Part 3 of 4
Practice
12 questions
What does the variable 'x' represent in the problem discussed in the video?
Write an equation that represents Marcia's profit, where 'x' is the number of computers she sells.
Part 4 of 4
Exit ticket
Quick comprehension check
“Devon is saving money to buy a bicycle that costs $150. He has $30 saved already, and he plans to save $10 each week. What is the minimum number of weeks it will take him to save enough money to buy the bicycle?”
Sample answer included in the free materials
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