The 7 should be one's place...?
Answer:
The price elasticity of demand is calculated as the percentage change in quantity divided by the percentage change in price.
= <span>(-8x - 9)(-9x2 + 7x - 9)
= 72x</span>³ - 56x² + 72x + 81x² - 63x + 81
= 72x³ + 25x² + 9x + 81
In short, Your Answer would be: Option D
Hope this helps!
Answer:
its 13
Step-by-step explanation: