<span>25 is 50% of 49.99
..................................</span>
        
                    
             
        
        
        
the simplest fraction is: 3/5
in decimal form its: 0.6
 
        
             
        
        
        
Answer:
a) Rumble: $1
 Pedal: $0.6
b) more than 5 songs 
c) No, should be integers only 
d) No, has to be integers greater than or equal to 2
Step-by-step explanation:
Part a
Rate per song is the slope.
Rumble:
Slope is 0.6
Rate is $0.6 per song
Pedal:
Slope: (4-2)/(2-0) = 1
Rate is $1 per song 
Part b
Pedal would be a better deal if it's cost is lower than Rumble's
Rumble's cost: C = 2 + S
Pedal's cost: C = 4 + 0.6S
4 + 0.6S < 2 + S
0.4S > 2
S > 5
c) No, because no. of songs has to be positive integers only. 
For example graph shows S = 2.5, but we know that's not possible 
d) No, since the cost is 2 + S,
cost can't be in decimals either.
Cost too should be only integers greater than equal to 2
 
        
             
        
        
        
Step 1. Simplify
7x^2 - 8x - 4 - 2x^2 + 3x + 5 + 5x^2 - 10x - 8
Step 2. Collect like terms
(7x^2 - 2x^2 + 5x^2) + (-8x + 3x - 10x) + (-4 + 5 - 8)
Step 3. Simplify 
10x^2 - 15x - 7
        
             
        
        
        
3y (y is the unknown number but it represents one number only... and also 3y represents 3 multiply by y)