Answer:
a constant is a data item whose value cannot change during the program execution just as its name implies that the value is constant a variable is a data item whose value can change during the program's execution . Thus as its name implies the the value can vary 
 
        
             
        
        
        
Gordon read a total of 35 pages, so if there is p pages read per day and 10 days you'd have something that looks like this: 35 = 10p.
        
             
        
        
        
Answer:
205
Step-by-step explanation:
Given 
N(t) = 100 + 15t is the equation of the relation. 
We're asked to find N(7)
Taking a look at the question again and putting it side by side the equation 
N(t)
N(7)
We can deduce that t = 7, and as such, solve for it in the equation given
N(7) = 100 + 15(7)
N(7) = 100 + 105
N(7) = 205
Therefore, the number of unread mails after 7 days will be 205
 
        
             
        
        
        
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Answer:
17.606
Step-by-step explanation:
root of 310  = 17.606