Jane paid $35 for her meal. If the cost of the meal was $30 , what was the tax rate.
1 answer:
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Answer:
Since the value of f(0) is negative and the value of f(1) is positive, then there is at least one value of x between 0 and 1 for which f(x) =0.
Step-by-step explanation:
The equation f(x) given is:
For x = 0. the value of the expression is:
For x = 1, the value of the expression is:
Since the value of f(0) is negative and the value of f(1) is positive, then there is at least one value of x between 0 and 1 for which f(x) =0.
In other words, there is at least one solution for the equation between x=0 and x=1.
Solution
Problem 1:
- Kelsie pays a one-time fee for the equipment of $5.00. This is a fixed cost that never changes and is paid just once.
- Kelsie pays $18.99 for each hour (h). This means that
For 1 hour, Kelsie pays $18.99 * 1 = $18.99
For 2 hours, Kelsie pays $18.99 * 2
For 3 hours, Kelsie pays $18.99 * 3
And so on...
- We can generalize this for h hours. That is,
For h hours, Kelsie pays $18.99 * h
- Thus, Kelsie pays $18.99h after h hours separate from the initial fee of $5.00.
- Thus, her total cost would be the addition of the flat fee of $5.00 and the cost of playing for h hours. That is:
Problem 2:
- Jayson pays $35 per hour with no initial flat fee.
- Following the same logic as in the case of Kelsie, we can write the total cost incurred by Jayson after h hours is:
Final Answer
The answers are:
Problem 1:
Problem 2: