From his last trip, Carl knows that his car's mileage is 22 miles per gallon of gas. How many gallons will he use if he is planning a 668-mile roundtrip? Use the formula d= rg. Where d is the distance, r is the rate in miles per gallon, and g is the number of gallons of gas

The maximum distance (in nautical miles) that a radio transmitter signal can be sent is represented by the expression 1.23h√, where h is the height (in feet) above the transmitter. estimate the maximum distance x (in nautical miles) between the plane that is receiving the signal and the transmitter. round your answer to the nearest tenth.