Answer:
29 hours
Step-by-step explanation:
If he earned $404.70 per 19 hours, you do 404.70/19 to figure out the amount he earns per hour. 404.7/19 is 21.3. He earns $21.3 per hour. to solve, you find how many times 21.3 goes into 617.7 or 617.7/21.3. That is 29. He needs to work 29 hours to earn $617.70
 
        
             
        
        
        
Given, a parking lot charges $3 for first hour and $2 per hour after that.
So for t hours, the parking lot charges $3 for the first hour and after first hour there is  hours left.
 hours left. 
So for  hours it will charge $2 per hour.
 hours it will charge $2 per hour.
The charges for  hours = $
 hours = $ .
.
Total charges for t hours for one car = $
Now for the second car, it will charge 75% of the first car.
So the charges for second car 
=$[  ]
]
=$
There are 3 cars. That parking charges for the third car is also 75% of the first car.
So for third car the parking charges are same as for the second car.
Total parking charges for 3 cars
= $
= $
We have got the required answer here.
The correct option is option C.
 
        
             
        
        
        
Answer:
You cannot simplify this problem down anymore; it is at its simplest form.
Step-by-step explanation:
You cannot add together x^4 and x^2 due to the simple fact that they do not share similar exponents.
For example you could add together x^4 and x^4 to get 2x^4. But you cannot add x^4 and x^2.
 
        
             
        
        
        
Answer: 21,875 sqm
Step-by-step explanation: 
Step 1: 
    Find the gross area of the garden.
    Square 150m = 22,500 sqm.
Step 2: 
    Find the area of the pool.
    Square 25m = 625 sqm.
Step 3: 
    Subtract the area of the pool from the gross area of the garden
    to find the net area of the garden.
    22,500 - 625 = 21,875 sqm.
Warning: 
    Do not subtract the side length of the swimming pool from the side length 
    of the garden before squaring.
 
        
             
        
        
        
Answer:
96
Step-by-step explanation:
Its a pattern :) BTW can you help with mine please