For this case, the first thing we must do is define variables.
 We have then:
 x: number of minutes
 y: total cost
 We write the algebraic expression that models the problem.
 We have then:
 
 Simplifying we have:

 Then, by the time the cost is equal to $ 300 we have:
 
 From here, we clear the value of x.
 Answer:
 an algebraic expression for the problem is:
 
 
        
             
        
        
        
Answer:
308[cos(45) + isin(45)]
Step-by-step explanation:
z1×z2:
Modulus: r1 × r2
= 7×44 = 308
Argument: theta1 + theta2
= -70 + 115 = 45
z1z2 = 308[cos(45) + isin(45)]
Or
z1z2 = 154sqrt(2) + (i)154sqrt(2)
sqrt: square root 
 
        
             
        
        
        
Answer:
11/6
Step-by-step explanation:
18f = 33g
f/g = 33/18 = 11/6
 
        
                    
             
        
        
        
Answer:
Please find attached the drawing of quadrilateral KLMN created with MS Whiteboard using the Ink to Shape command
(a) Two pairs of opposite sides are  ,
,  and
 and  ,
,  
 
(b) Two pairs of opposite angles are ∠LKN, ∠LMN, and ∠KLM and ∠KNM
(c) Two pairs of adjacent sides are  ,
,  and
 and  ,
, 
(d) Two pairs of adjacent angles are ∠LKN, ∠KLM and ∠LMN, ∠KNM
Step-by-step explanation: