Step-by-step explanation:
Wai 1unit+45
Cheryl 1unit
Zheng 4units+180
Altogether 6units+225=510
 6units = 510-225
 6units=285
 1unit=285÷6
 = $47.5
So Wai =47.5+45 = 92.5
 Cheryl =47.5
 Zheng =4×47.5+180 =370
370-47.5=$322.5
Answer $322.5
 
        
             
        
        
        
Answer:
ummm I think this is obvious
Step-by-step explanation:
2 circles in each group, shade in one group of 2.
 
        
                    
             
        
        
        
Step-by-step explanation:
BODMAS 
B-brackets()
O-of(multiplication)×
D-division÷
M-multiplocation×
A-addition+
S-subtraction-
 
        
             
        
        
        
Answer:
।When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, causing 
 
        
             
        
        
        
M can be any positive real number.
Explanation:
From f(x) = √(mx) ; if x is posive m has to be positive; if x is negative m has to be negative; if x is cero m can have any value, and the range will always be 0 or positve
From g(x) = m √x; x can only be 0 or positive and the range will have the sign of m.
Given we concluded that the range of f(x) can only be  0 or positive, then me can only be 0 or positive.