Solve the Problem $y = 1 - \frac { x ^ { 2 } } { 4 }$

question 130

Multiple Choice

Solve the problem.
-An auxiliary fuel tank for a helicopter is shaped like the surface generated by revolving the curve $y = 1 - \frac { x ^ { 2 } } { 4 }$ , $- 2$ $\leq x \leq 2$ , about the $x$ -axis (dimensions are in feet) . If a cubic foot holds $7.481$ gallons and the helicopter gets 3 miles to the gallon, how many additional miles will the helicopter be able to fly once the tank is installed (to the nearest mile) ?

• A) 38
• B) 150
• C) 75
• D) 50

---

Definitions:

Inelastic

Describes a situation where the demand or supply for a good or service is relatively unresponsive to changes in price.

Temporary Assistance

Short-term financial or material aid provided to individuals or families in need to help them cope with emergencies or periods of economic hardship.

Needy Families

Households with insufficient income or resources to meet basic living expenses.

Supplemental Security Income

A United States government program that provides financial aid to elderly, blind, or disabled individuals with little or no income to help them meet basic needs for food, clothing, and shelter.