Find the indicated maximum or minimum value of the objective function in the linear programming problem. Maximize
f = 70x + 50y
subject to the following.
x + 2y ≤ 48
x + y ≤ 30
2x + y ≤ 50
x ≥ 0, y ≥ 0

(c) a vine called the mile-a-minute weed is known for growing at a very fast rate. it can grow up to 0.5 ft per day. how fast in inches per hour can the mile-a-minute weed grow up to? show your work using the correct conversion factors.