Answer:
the number is 21
Step-by-step explanation:
(9+x)(4)=120
9+x=30
x=21
 
        
                    
             
        
        
        
All the answers except C has a Vertical Line when graphed. It must pass the Vertical line test in order to be a function.
Vertical Line Test: If you can draw a vertical line anywhere on a graph so that it hits the graph in more  than one spot, then the graph is NOT a function.
C.) can pass the test since it's a horizontal line.
Hope this helps!
 
        
             
        
        
        
Answer:
below only shows up once
Step-by-step explanation:
mark: tally:  frequency:
61  I           I
67   I               I
81       I               I
83         I            I
87          I           I
88             I         I
89             I         I
90         I              I
98       I            I
100              I         I
 
        
             
        
        
        
Answer: The amount of money he must be spent when the crew is going to work 2 shifts is $11. 
Step-by-step explanation:
Since we have given that 
the function t(x)=3x+1 determines how many cans of green beans a food truck needs to stock on board , where x is the number of shifts the crew is going to work in the truck.
And the function c(x)= x+4 
Since the crew uses c(t(x)) to find the amount of money to spend on green beans .
So, we will use "Composition of functions ":

Since the crew is going to work 2 shifts , so our answer will be 

Hence, the amount of money he must be spent when the crew is going to work 2 shifts is $11. 
 
        
                    
             
        
        
        
<span>cos<span>[<span><span>7pi/</span>4</span>]</span></span>=<span>cos<span>(2pi−pi<span>4</span>)
</span></span>               =<span>cos<span>(−pi/<span>4</span>)
</span></span>               =<span>cos<span>(pi<span>4</span>)
</span></span>               =<span><span><span>√2/</span>2</span></span>