Suppose that you are a staff economist with an economic consulting firm. the operator of a local harbor has commissioned your firm to do a market analysis of the demand for berths (parking spaces) for boats. your firm finds that the cross-price elasticity between berths and boat fuel is -2.15. you've just completed your study of elasticities and are asked to make a recommendation based on this information. if the price of boat fuel in the area increases by 4% with no change in the price of a berth, the quantity of berths that people demand will: