12 dollars is discounted off, making the price 28 dollars.
Step-by-step explanation:
10 percent is 4$, 4×3=12
 
        
             
        
        
        
Rate of Change:
At 1 mile in 30 seconds.
At  5 miles in 2.5 minutes.  2.5 minutes = 2.5*60 = 150 seconds.
Rate of change =   Change in height / Change in time
                            =   (h₂-h₁)/(t₂-t₁)
                            =   (5 -1) /(150 -30) = 4/120 = (1/30) = 0.0333 miles per second.
                             = (1/30) miles per second or 0.0333 miles per second.
To have the answer in miles per minute.
         (1/30) miles per second = (1/30) miles/second.
60 seconds = 1minute
1 second = (1/60) minute.
(1/30) miles/second  =  (1/30) miles/(1/60)minute
                                   =   (1/30) *60 miles / minute
                                   =    2 miles per minute. 
        
             
        
        
        
Answer:
x^3-3x=0
+3x
x^3=3x
ok so that means that that number cubed is the same as a number squared so
x = 0 
x = -sqrt(3) 
x = sqrt(3)
im going say the answer is mostly likely 0 but it could be the other ones
Hope This Helps!!!
 
        
                    
             
        
        
        
The volume of sphere is  feet cubed.
 feet cubed.
Step-by-step explanation:
Given, 
Surface area of sphere = 196π square feet 
Surface area of sphere = 4πr²
We will find radius of sphere.

Dividing both sides by 4π

Taking square root on both sides 

The radius is 7 feet. 
Volume of sphere = 

The volume of sphere is  feet cubed.
 feet cubed.
Keywords: volume, surface area 
Learn more about surface area at:
#LearnwithBrainly
 
        
             
        
        
        
Answer:
x + 4y = 4 
4y = 4 - x
multiply both sides by 1/4
y = 1/4( 4- x)
y = 1- 1/4x