Answer:
y=4x-9
Step-by-step explanation:
Answer:

Step-by-step explanation:
Let the number be x;
The product of 4 and the number will be;

The the square of the number is given as;

Taking the difference of both expressions above;

Factor out the common term:

Hence the difference between the product of 4 and a number and the square of the number is 
Answer:
17.90493 is the area
Step-by-step explanation:
The answer is 36,00
This is because 5x 60 gives you the amount in a minute
Then you take that answer and multiply it by another 60 to give you the number per hour
Then that number times 2 to give you the amount every two hours