If Starbucks’s marketing department estimates the income elasticity of demand for its coffee to be 2.8, how will the prospect of an economic bust (expected to decrease consumers’ incomes by 5 percent over the next year) impact the quantity of coffee Starbucks expects to sell?

The percent change in quantity is -0.14%.

Step-by-step explanation:

The formula to compute the change in quantity is:

The income elasticity of demand is 2.80.

Percent change in price is -5% (since the prices decreases)

Compute the percent change in quantity demanded as follows:

Thus, the percent change in quantity is -0.14%.

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1

should have been evaluated with one odd value and one even value. the expressions have equivalent values when . when , the first expression has a value of 3 and the second

step-by-step explanation: