A car uses 30 gallons of gasoline for a trip of 800 miles. How many gallons would be used on a trip of 700 miles?

Plz heeeeeeelp plz give me the answer

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air