Parking charges for first 2hours =$5 per hour after 2 hours parking charges = $2.50per hour
You can use the slope intercept form for the line equation
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 
70
7-0=7
81 or 18
8-1=7
92 or 29
9-2=7
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