What is the correlation between the number of hours driving and the number of gallons of gas used?

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

For the feasibility region shown below find the maximum value of the function p=3x+2y

What is 617.3 miles and each gallon of gas the car can travel 41 miles select a reasonable estimate of the number of gallons of gas karl used.