550-500 is not 500 it’s 50
        
             
        
        
        
From the equation of motion, we know, 

Where s= displacement
u= initial velocity
a= gravitational force
t= time 
Displacement is 0 since the ball comes back to the same point from where it was thrown.  
A =  since the ball is thrown upwards.
 since the ball is thrown upwards.
Plug the known values into the equation. 
=> 
Solving for u gives :
u= 16.67 m/ sec ....... equation (1)
At maximum height, final velocity i.e v is 0 
Time take to reach the top = 

=> 
Solving for s we get 
s= 14.16 m
 
        
             
        
        
        
Answer:
See below
Step-by-step explanation:
We can simply use a graphing calculator to graph the function

See in the attached file!
 
        
             
        
        
        
Answer:
35 sandwiches 
Step-by-step explanation:
62÷2=31
31+4=35
 
        
             
        
        
        
<h2>Answer: 
The line from the question [ y = -8x + 3 ] passes through the point ( -1, 11 ). </h2>
<h3 /><h3>Step-by-step explanation:
</h3>
<u>Find the slope of the parallel line</u>
When two lines are parallel, they have the same slope.
                  ⇒  if the slope of this line = - 8
                       then the slope of the parallel line (m) = - 8
<u>Determine the equation</u>
We can now use the point-slope form (y - y₁) = m(x - x₁)) to write the equation for this line:  
                                ⇒  y - 11  =  - 8 (x - (-1))                                
                                 ∴  y - 11  = - 8 (x + 1)
We can also write the equation in the slope-intercept form by making y the subject of the equation and expanding the bracket to simplify:
                       since   y - 11  = - 8 (x + 1)
                                         y  = - 8 x  + 3
The line from the question [ y = -8x + 3 ] passes through the point ( -1, 11 ).