Answer:
$6500
Step-by-step explanation:
Let the amount of money invested by Lian be $x
Interest rate = 5.2% per year
interest earned in first year will be  5.2% of  amount of money invested by Lian .
(note: since in first year there will be no interest accrued on interest so interest for first year is simple interest )
interest earned in one year if money invested by Lian is $x
= 5.2% of $x  (1)
But , it is given in one year  she received interest of 338 dollars
so, 338 dollars must be equal to 5.2% of $x 
equating $338 with  5.2% of $x  , we have
 5.2% of x  = 338
=> (5.2/100) * x = 338
=>5.2 x = 338*100
=> x = 33800/5.2 = 6500.
Thus,  amount of money Lian invested is $6500.
 
        
             
        
        
        
 constant term in any function is the term whose value does not change on variation of other parameters or in other case. We can also say constant term is independent of variable parameters. 
take example 
y = x + 3
here 3 is constant term which will not change either I change x or y . 3 is independent . it's just helps equation to hold information that overall in equation its matter. 
so in given problem -4 is the constant
 
        
             
        
        
        
Answer:
C. 325.
Step-by-step explanation:
The last term a5 = 85
a1 = 45
Sum of n terms = n/2 (a1 + l)
So here we have n = 5, a1 = 45 and the last term l = 85
= (5/2)(45 + 85)
= 5/2 * 130
= 325.