The starting price of a taxi in a city is 5 yuan (driving no more than 3 kilometers). After that, the price will be increased by 1.5 yuan for every additional kilometer. How much does it cost for a person to take a taxi for a distance of X kilometers (x > 3)? If a and B are 10 kilometers apart, the person has only 15 yuan. If he wants to go from a to B, is the taxi cost enough? Why?

The relationship between cost f (x) and distance x is as follows
f(x)=5+1.5*(x-3)
When x = 10, f (x) = 5 + 1.5 * 7 = 15.5 > 15
The rental fee 15.5 is greater than the passenger's ability to pay 15, the rental fee is not enough

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