Answer:
5.209 or A
Step-by-step explanation
5^x-4=7
reserve 4
log sides
x-4 log5 and log7  
x-4=log7/log5
+4 or number of your equation
x=log5/log7 +4
use calculator 
get answer
5.209
EDIT: Got a 100 on the test this is correct
 
        
             
        
        
        
Answer:
Option 2 is correct.
Step-by-step explanation:
Given the coordinates of lines segment (3, 10) and (7, 8). we have to find the mid-point of given line segment.
Mid-point formula states that if  and
 and  are the coordinates of end points of line segment then the coordinates of mid-point are
 are the coordinates of end points of line segment then the coordinates of mid-point are 

∴ Coordinates of mid-point of line segment joining the points          (3, 10) and (7, 8) are

Hence, option 2 is correct.
 
        
                    
             
        
        
        
(I know there isnt any real problem here to solve, but heres a tip on how to solve greatest to least with decimal problems)
1. Just because a number looks big, doesn't mean it is big
Example: 1.00000000000001 < 1.1
just look at the numbers ^ and dont just hastily read it over assuming that 1.1 is smaller because it "has less digits"
2. Negative numbers are... opposite. and they are less than positive numbers
-3.4 > -4.1
Why is this? Well, if you look on a line, with the point 0 in the middle, you can see that -3.4 is not as far away from 0 as -4.1 is. So the idea is to apply opposite logic for negative numbers
I hope these tips helped!! :D
 
        
                    
             
        
        
        
With these, always write out the multiples first.
Start like this:
(assume one of the factors is negative)
1 and 1120
2 and 560
4 and 280
5 and 224
7 and 160
8 and 140
10 and 112
14 and 80
16 and 70
20 and 56
28 and 40
32 and 35
from those, the obvious choice is the one with a difference of three. In this case, 32 and 35, because -32 + 35 equals 3.
        
             
        
        
        
Answer:
Step-by-step explanation:
G(3)= 6+9-2=13