Demand


Practice Problems

Problem : Nathan and Joe are shopping for video games. Nathan's demand function for video games is Q = 30 - 3P, and Joe's demand function is Q = 48 - 4P. What will their combined demand be if the price is $5? $11?


Problem : Michelle is shopping for shirts. She chooses one, then notices that the shirts are on sale, and gets another two shirts. How can you explain this with a graph?


Problem : Jenn's parents increase her allowance, so she spends more money on candy every week. How can you explain this with a graph?


Problem : Kris and Tim's demand curves for playing cards look like this:


Tim and Kris's Demand curves for Playing Cards
Who wants more when the price is $3 a pack? $4 a pack? What is their combined demand at $4 a pack?


Problem : Emily decides to set aside $200 from her paycheck every month. How will this affect her demand curve? (You don't have to use specific numbers, just explain)


Take a Study Break

SparkLife

Star Trek gets SEXY

Chris Pine and Zoe Saldana heat up the red carpet!

SparkLife

Are you afraid of relationships?

Auntie SparkNotes can help!

SparkLife

Wanna get JLaw's gorgeous glow?

Click here for simple, sexy makeup tricks!

SparkLife

Sexy starlet style

See every single look from the Met Gala!

SparkLife

Who'd be on your zombie-apocalypse crew?

We already dib'sed Genghis Khan.

Geek out!

The MindHut

Geeky Actresses: Then and Now

Before the fame!

The MindHut

9 Scientific Inaccuracies in Iron Man 3

Click to see what they got wrong.

The MindHut

Top 10 Predictions Sci-Fi Got WRONG

So wrong, they're WRONG.

The MindHut

The 15 Most Awesome Robots, Ever

These Robots Rock!

The MindHut

If You Like Game of Thrones...

...Then you'll LOVE these books!

The Book

Cover image

Read What You Love, Anywhere You Like

Get Our FREE NOOK Reading Apps