"f(2)>0" tells you that if you evaluate the function f(x) at 2, the result is:  1) positive, or 2) greater than zero.
 
        
             
        
        
        
38-15= 23. I’m guessing this is what you meant. If not please correct me.
        
             
        
        
        
Answer:
500
Step-by-step explanation:
Well you find one tenth of a number by dividing it by 10
So to do the opposite, you can do 50*10 which is 500
Or if you really wanted to you could go through each option dividing them all by 10 till you got 50
 
        
                    
             
        
        
        
Answer:
G 7
Step-by-step explanation:
If t= 27 when s=3  27/3=9
the t=63 when s= 7    63/7= 9
 
        
                    
             
        
        
        
Answer:
x = 16°
H = 46°
I = 55°
J = 39°
Step-by-step explanation:
Since the whole figure is 180°
Deduct 180 by the numbers mentioned above in order to find x. 
180 - 2 - 9 - 9 = 160
3x + 4x + 3x = 10x
10 x = 160
x = 160 ÷ 10 = 16
Since we know what x is, we can find all the angles in the figure. 
Angle at H = 3 x 16 - 2 = 46°
Angle at I = 4 x 16 - 9 = 55°
Angle at J = 3 x 16 - 9 = 39°