What is the elasticity of demand for the demand curve Q = 10 – 5P when P=1?

The price elasticity of demand for personal computers is estimated to be 2.2. If the price of personal computers declines by 20 percent, what will be the expected percentage increase in the quantity of computers sold?

Suppose a university raises its tuition from 3,000 to 3,500. As a result, student enrollment falls from 5,000 to 4,500. Calculate the price elasticity of demand. Is demand elastic, unitary elastic, or inelastic?

Jills Sausage Dog Stand projects the following demand for Jills sausage dogs: a. Calculate the price elasticity of demand between 2 and 4. Is demand in this range elastic or inelastic? b. Calculate the price elasticity of demand between 4 and 6. Is demand in this range elastic or inelastic?

As the price of good X rises from 10 to 12, the quantity demanded of good Y rises from 100 units to 114 units. Are X and Y substitutes or complements? What is the cross elasticity of demand?

If the midpoint on a straight-line demand curve is at a price of $7, what can we say about the elasticity of demand for a price change from $12 to $10? What about from $6 to $4?

If the elasticity of demand for hamburgers equals 21.5 and the quantity demanded equals 40,000, predict what will happen to the quantity demanded of hamburgers when the price increases by 10 percent. If the price falls by 5 percent, what will happen?

Suppose a straight-line downward-sloping demand curve shifts rightward. Is the price elasticity of demand higher, lower, or the same between any two prices on the new (higher) demand curve than on the old (lower) demand curve?

If the price of a good or service increases and the total revenue received by the seller declines, is the demand for this good over this segment of the demand curve elastic or inelastic? Explain.

Evaluate the following statement: Along a downward-sloping linear demand curve, the slope and therefore the elasticity of demand are both 'constant.