Answer:
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%.
6(2x + 5y)
6[2(3) + 5(4)]
6[6 + 20]
6(26)
156
The answer is 156
Hope this helps :)
Answer: x does not have a value
Step-by-step explanation: its a "variable" or sometimes an "unknown".