Using function concepts, it is found that the domain of the graph Antonio is creating would be: 
- The domain of a function is the <u>set that contains all possible input values</u>.
In this problem, the inputs are the time, between <u>2 hours before and 2 hours after the peak time of 6 pm</u>, hence, it is given by:
For more on the domain of functions, you can check brainly.com/question/24374080
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We can simplify the expression with patience and a little mathematical tinkering.
The simplified expression is shown in the attached picture, along with more information obtained about your expression.
The objective is to add similar terms and fractions and group them together to form a solution in a compact, elegant form.
Answer:
Not to sure if this is correct but I think it is 6: 1 : 18
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it takes 3 years.formula interest =PRT/100 so its 252 =1200 times 7 times T all over 100 then multiply by 100 both sides to get 25200=8400T devide by 8400 both sides to get 3
