Answer:
23.13
Step-by-step explanation:
 
        
             
        
        
        
<h3>
Answer: (c * d)(x) = 
4x^3 + 18x^2 - 10x</h3>
Work Shown:
I'm assuming the dot means multiplication. If so, then,
(c * d)(x) = c(x)*d(x)
(c * d)(x) = [ c(x) ] * [ d(x) ]
(c * d)(x) = (4x-2)(x^2+5x) .... substitution 
(c * d)(x) = 4x(x^2+5x) - 2(x^2+5x) ... distribute
(c * d)(x) = 4x(x^2)+4x(5x) - 2(x^2)-2(5x) ... distribute again
(c * d)(x) = 4x^3 + 20x^2 - 2x^2 - 10x
(c * d)(x) = 4x^3 + 18x^2 - 10x
 
        
        
        
9.26% 
total tiles 36,
4 will be test so probability of testing 4/36
non defective =30
probability of testing non defective 4/36 x 30/36 x 100=
9.26%
        
             
        
        
        
A rule you can use to find the answer to #10 is adding a layer of pennies around each edge
        
             
        
        
        
I graphed the given points and based on my graph.
<span>
x   
y  </span>→ EXPONENTIAL<span><span>
</span>
<span>
-2
21
</span><span> 1   4
</span><span> 0   1
</span><span> 1   0
</span></span><span>
x    y  </span>→ LINEAR<span><span>
</span>
<span>
-2   6
</span>
<span>
-1
-2
</span><span> 0   2
</span><span> 1 
6
</span></span>
<span>
x    y  </span>→ QUADRATIC<span><span>
</span>
<span>
-2
12
</span>
<span>
-1
-2
</span><span> 0
-8
</span><span> 1
-6
</span></span><span>
<span><span>
x  
y  </span></span></span>→ EXPONENTIAL<span><span><span>
</span>
<span>
-2
16
</span>
<span>
-1  8
</span><span> 0   4
</span><span> 1  2
LINEAR FUNCTIONS always maintain a constant slope. In the above linear function, the slope is 4. 
EXPONENTIAL and QUADRATIC FUNCTIONS have different slope in every point. 
Exponential functions can be identified by the immediate increase or decrease in the value of y resulting to a minimal increase or decrease in the value of x. 
Quadratic functions can be identified as such due to the similar points it has after having the vertex. 
</span></span></span>