Answer:
105 sq. cm
Step-by-step explanation:
The shortest altitude will ⊥ to the longest side.
A = (1/2)bh
=.5(30)(7)
= 105 sq. cm
 
        
             
        
        
        
Answer:
(-1,-4)
Step-by-step explanation:
(2, -1)
Moving down 3 means subtract 3 from the y value
Left 3 means subtract 3 from the x value
(2-3, -1-3)
(-1,-4)
 
        
                    
             
        
        
        
Answer:
12.6
Step-by-step explanation:
4.2×3=12.6
I hope this answer can help you
 
        
                    
             
        
        
        
Answer:
f(320)= how much Dereck pays for phone service if he calls  320 minutes.
F(320)=0.11(320)+43=35.2+43=78.2
Answer: the value of f(320) is $78.2 and it will be the cost of phone service for 320 minutes of international calls.