30 = 5(m) + 7(n)
5(a) + 30 = 7(a)
(a) is the number of visits!
15 = (a) 
5(15) = 75 + 30 = 7(15) = $105
        
             
        
        
        
The longest side of a right triangle is hypotenuse
        
             
        
        
        
Answer:
C) abH
Step-by-step explanation:
a × b × H
= abH
The answer is option C
 
        
             
        
        
        
18/25 is already simplified. There is no number that can go in both 18 and 25.
        
                    
             
        
        
        
Its a simultaneous equation:
lets make "x" the used games and "y" the new ones
4x + 2y = 84
6x + y = 78. (multiply this by 2 to cancel out y)
12x + 2y = 156
so now we subtract them:
12x - 4x = 156 - 84
x = 9
used games cost $9
new games cost 78 - 6(9) = $24
Janet has $120 but she already bought 3 NEW games so:
120 - 3(24) = $48 left
48/9 = how many used ones she can buy = 5. something
she can buy 5 used