Answer:
#2 is a ratio so you gotta add.
#3 it’s just adding it for example 2p + 5a = 7pa
 
        
             
        
        
        
Answer:
Please see attachment
Step-by-step explanation:
Please see attachment
 
        
             
        
        
        
Answer:
27
Step-by-step explanation:
Remember to follow PEMDAS. Note that, when multiplying or dividing:
1) one positive and one negative = negative number
2) two positive = positive number
3) two negative = positive number
(-7)(-5) = -7 * -5 = 35
+(-8) = +1 * -8 = -8
Subtract: 
35 - 8 = 27
27 is your answer.
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Answer:
2x + 20
Step-by-step explanation:
Hi there,
since there are 2 weeks :
x + x = 2x
10 + 10 = 20
==2x + 20 while simplifying it becomes, 2(x+10)