F(x) = 3x - 16x - x + 4
f(x) = - 14x + 4
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The formula for volume is length times width times height
The length is 5
The width is 2.4
The height is 8
2.4 times 8 times 5=96 cubic feet
        
             
        
        
        
The answer is v= -8x/-xy+9
Here is the step by step process (This is going to be long):
1.  9v+8x=vxy
Multiply both sides by vx
2.  9v+8x+−vxy=vxy+−vxy
−vxy+9v+8x=0
Add -vxy to both sides
3.  −vxy+9v+8x+−8x=0+−8x
−vxy+9v=−8x
Add -8x to both sides
4.  v(−xy+9)=−8x
Factor out the variable v
5.  v(-xy+9)/-xy+9 = -8x/-xy+9
v = -8x/-xy+9
Divide both sides by -xy+9
 
        
             
        
        
        
Answer:
a.    0.71
b.    0.9863
Step-by-step explanation:
a. From the histogram, the relative frequency of houses with a value less than 500,000 is 0.34 and 0.37
-#The probability can therefore be calculated as:

Hence, the probability of the house value being less than 500,000 is o.71
b.
-From the info provided, we calculate the mean=403 and the standard deviation is 278 The probability that the mean value of a sample of n=40 is less than 500000 can be calculated as below:

Hence, the probability that the mean value of 40 randomly selected houses is less than 500,000 is 0.9863
 
        
             
        
        
        
Answer:
a₂₁ = 638
Step-by-step explanation:
substitute n = 21 into the explicit formula
a₂₁ = - 2 + 32(21 - 1) = - 2 + 32(20) = - 2 + 640 = 638