A taxi is charging you $1.50 per 500 meters. If you know your destination is 7.1 miles away, how much will the taxi cost you? Th
2 answers:
Answer: The required cost of taxi is $34.3.
Step-by-step explanation: Given that a taxi is charging $1.50 per 500 meters. Our destination is 7.1 miles away and there are 1,609 meters in a mile.
We have to find the cost of taxi.
We have
1 mile = 1609 meters.
So, 7.1 miles = 7.1 × 1609 = 11423.9 meters.
We will be using the UNITARY method to solve the remaining problem.
We have
Cost of taxi for 500 meters = $1.50.
So, the cost of taxi for 1 meter will be
Therefore, the cost of taxi for 11423.9 meters is given by
Rounding off to the nearest tenth, we get that the cost of taxi is $34.3.
Thus, the required cost of taxi is $34.3.
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Choice A is the answer which is the point (1,-1)
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How I got this answer:
Plug each point into the inequality. If you get a true statement after simplifying, then that point is in the solution set and therefore a solution. Otherwise, it's not a solution.
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checking choice A
plug in (x,y) = (1,-1)
This is true because -3 is equal to itself. So this is the answer.
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checking choice B
plug in (x,y) = (2,4)
This is false because 0 is not to the left of -3, nor is 0 equal to -3. We can cross this off the list.
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checking choice C
plug in (x,y) = (-2,3)
This is false because 7 is not to the left of -3, nor is 7 equal to -3. We can cross this off the list.
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checking choice D
plug in (x,y) = (3,4)
This is false because -2 is not to the left of -3, nor is -2 equal to -3. We can cross this off the list.