P-paratheses (do any math that has parentheses around the numbers) y=(2x5)+25
E-exponents (do the exponents next) y=(2x5)+5^2
M-multiplying. (Basically everything is self explanatory from here to then cuz im lazy to list examples) 
Just basically if you don't use PEMDAS, you'll get the wrong answer
        
             
        
        
        
Answer:
a 17, b 10, c 15, d 20
Step-by-step explanation:
a^2+b^2=c^2
64+225 = 289
a = 17
36+64 = 100
b = 10
81+144 = 225
c = 15
256+144 = 20
Hope that helps
 
        
             
        
        
        
Answer:
I assumed that you made a mostake and meant:
On a electricity bill of $38.76, mrs.miller pays only $14.80 because she pays a certain date. what percent discount is mrs.miller allowed?
62% approx
Step-by-step explanation:
$38.76 - $14.80 = $23.96
23.96/38.76 = 61.8%
 
        
                    
             
        
        
        
The graph in the top right—-when trying to figure these out, just plug numbers in for x to find the y.
For example: plug 0 in for x on both equations—
2^0 -1=0 so you get it passing thru 0,0
0+2=2 so it passes through 0,2
        
                    
             
        
        
        
This answer would be acute because it equals under 45