54% of the time. 21 and 45 is 66. Two hours is 120. The you subtract
        
             
        
        
        
Answer:
see below (I hope this helps!)
Step-by-step explanation:
A real-life situation for this inequality could be "Tom runs a lemonade stand. His profit is x. If Tom knows that his profit is less than 2 dollars, what inequality represents this situation?"
 
        
             
        
        
        
<u>Answer:</u>
a) 3.675 m  
b) 3.67m
<u>Explanation:</u>
We are given acceleration due to gravity on earth = 
And on planet given =  
A) <u>Since the maximum</u><u> jump height</u><u> is given by the formula  </u>

Where H = max jump height,  
v0 = velocity of jump,  
Ø = angle of jump and  
g = acceleration due to gravity
Considering velocity and angle in both cases  

Where H1 = jump height on given planet,
H2 = jump height on earth = 0.75m (given)  
g1 = 2.0 and
 and  
g2 = 9.8 
 
Substituting these values we get H1 = 3.675m which is the required answer
B)<u> Formula to </u><u>find height</u><u> of ball thrown is given by  </u>
  
which is due to projectile motion of ball  
Now h = max height,
 v0 = initial velocity = 0,
 t = time of motion,  
a = acceleration = g = acceleration due to gravity
Considering t = same on both places we can write  

where h1 and h2 are max heights ball reaches on planet and earth respectively and g1 and g2 are respective accelerations
substituting h2 = 18m, g1 = 2.0 and g2 = 9.8
  and g2 = 9.8 
 
We get h1 = 3.67m which is the required height