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The taxi charging standard in our province varies from place to place. In place a, the starting price is 8 yuan, 3 km and 1.8 yuan per kilometer. In place B, the starting price is 5 yuan, 2.5 km and 1.2 yuan per kilometer (1) How much is the difference in the cost of taking a taxi x (x > 3) km between Kunming and Qujing
I don't know the relationship between AB and Kunming, Qujing
A：8+1.8（x-3）
B：5+1.2（x-2.5）
Difference: 8 + 1.8 (x-3) - 5-1.2 (x-2.5) = 3 + 0.6x-5.4 + 3 = 0.6 + 0.6x
According to the taxi charging standard of a city, the taxi within 3km (including 3km) charges 8 yuan, and the part over 3km charges 1.5 yuan per km, y yuan,
The relationship with the distance x (km) and (x ＞ 3) of a taxi is expressed as (). If Xiao Li travels 6km in a taxi, he should pay () yuan. If Xiao Li pays 17 yuan, he travels () km in a taxi
y=8+1.5(x-3)
y=8+1.5(6-3)=12.5
17=8+1.5(x-3) x=9
The charging standard of a taxi is: within 4km, the starting price is 10 yuan, from 4km to a (km), 1.5 yuan per kilometer; outside a (km), 2 yuan per kilometer,
The charging standard of a taxi is: within 4km, the starting price is 10 yuan; from 4km to a (km), 1.5 yuan per kilometer; from a (km), 2 yuan per kilometer. Now Xiaoming takes x (km) (x > A), how much should he pay?
Payable = 10 + (A-4) × 1.5 + 2 (x-a)
=10+1.5a-6+2x-2a
=4+2x-0.5a
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