THE BEST ANSWER IS E. FIRST CALCULATE THE VOLUME OF WATER THAT HAS...

2. The best answer is E. First calculate the volume of water that has been poured into the tank. If it has been poured at a rate of 8 cubic feet per minute for 2.5 minutes, 8 × 2.5 = 20 cubic feet. The tank is rectangular, so its volume is length × width × height (or depth), with the answer in cubic units. We are given the length, and can calculate the width, since we are told that the width is 1/2 the length, or 1/2 of 3 feet, or 1.5 feet. The volume we have already calculated to be 20 cubic feet. Therefore, 20 = length × width × height, or 20 = 3 feet × 1.5 feet × the height. Solving for the height, we get 40/9 , or approximately 4.44 feet.