Let x represent the number of ounces of vinegar
Let y represent the number of ounces of lemon juice
Oil required = 8 oz
Container can hold = 16 oz
So the inequality equation will be :

The speed would be 158.4fps and the parachutist would fall 2,376 feet during 15 seconds.
I think it's D. The area of A is k2 times the area of rectangle B