Answer: 
Step-by-step explanation:
Given : Distance traveled by Lily= 354 miles
Time= 6 hours
Then,

Hence, the required speed of Lily = 
Answer:
Find the minimum and maximum values of the objective function subject to the given constrants. Objective function: C= 2x + 3y
Constraints:
x>0
y>0
Comment: These two conditions tell you the answers are in the 1st Quadrant.
-----------------------------
x +y < 9
Graph the boundary line: y = -x+9
Solutions points are below the boundary line and in the 1st Quadrant.
Check the picture below.
recall that a reference angle, is the angle made with the x-axis, regardless of the Quadrant the terminal point is at.
what's its tangent? well, you can check your Unit Circle, if you don't have one, you'd want to get one about now, you can search online for one, quite a few to get there, anyhow, at that point, the "x" and the "y" are the same value, and thus the tangent is 1.
Hey, im not sure if its correct or not, but here!