Answer:
1) The demand will decrease by 37% as a result of a 10% increase in price:
0.10 x -3.7 = -0.37 a ngevative impact in the maginitude of 37%
2) Revneue will fall
3) The decrease in revenues will be for 30.7%
Explanation:
Revenues Price x Quantity
P (1 + 0.1) Q (1 - 0.37) = (1.1)(0.63) = 0.693
we apply to the price the 10% increase
and we apply to the demand the 37% decrease in quantity
The revenue will fall to 0.693 = 69.3%
100 - 69.3 = 30.7%