Answer:
m<4=40
Step-by-step explanation:
Supplementary angles form 180 degrees
m<3 is vertical to the 50 degree angle which is equal. 
so. m<3=50
m<5=90
90+50=140
180-140=40
m<4=40
 
        
             
        
        
        
The vertex (5,39)
5 is the value of x. 39 is the value of y. y is the cost function of the minimum value in dollars.
(5,39) vertex means that  <span>Buying five of each type of plant costs $39, which is the lowest possible cost.</span>