Amanda has $40 to spend on used books. Hardcover books cost $5 and paperback books cost $8 each. Which equation in standard form determines the number x of hardcover books and the
number y of paperback books she can buy?
Hi I need help asap plz

The mountain springs water company has two departments, purifying and bottling. the bottling department received 67,000 liters from the purifying department. during the period, the bottling department completed 65,000 liters, including 3,000 liters of work in process at the beginning of the period. the ending work in process was 5,000 liters. how many liters were started and completed during the period?