Answer: 
He would make $36 for 12 pounds of strawberries 
He would make $196 for 49 pounds of blueberries 
He would make 3S if he sold S pounds of strawberries 
He would make 4B if he sold B pounds of blueberries 
Working:
We know that strawberries are $3/pound so $3 x 12pounds = $36
We know that blueberries are $4/pound so $4 x 49pounds = $196
The letters represent the amount of pounds of fruit being bought so the calculation for that is ($ x pounds) so you would write this but without assigning a numerical value to the amount. So if the strawberries are $3/pound and Luke sold ‘s’ pounds then it would be 3S (or 3xS but that is already assumed). The same goes for the blueberries. We know that they are $4/pound so it would be 4B.
Sorry if this doesn’t make any sense but I hope this helped
        
             
        
        
        
Answer:
Arc AC = 90°
Step-by-step explanation:
Postulate:
The measure of an arc will ALWAYS be equal to the measure of the central angle of the circle.
The angle of arc AC is marked with a square.
That square mark means it is 90°. 
So the arc would also measure 90°.
Cheers
 
        
             
        
        
        
Answer:
d?
Step-by-step explanation:
 
        
             
        
        
        
Answer:
x = 1, 5
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
r=  
(2)^5(cos(330.6)+isin(330.6))
=64(Cos1350+iSin1350)
64(cos180+isin180)
=64(-1+0)= -64  
Step-by-step explanation: