题目信息
The toll T, in dollars, for a truck using a certain bridge is given by the formula $$ T = 1.50 + 0.50(x - 2)$$ , where x is the number of axles on the truck. What is the toll for an 18-wheel truck that has 2 wheels on its front axle and 4 wheels on each of its other axles?
A:$2.50
B:$3.00
C:$3.50
D:$4.00
E:$5.00
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正确答案：
B:$3.00
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