Question

A train travels at (3x + 5) miles per hour for 4 hours. Write an expression showing this.

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If x = 4, how far did the train travel in four hours? _________________

Answer 1

3x+5. Replace the x with a 4 and multiply 3 and 4. You’ll get 12 plus 5 and the answer well be 17.

Answer 2

3x4+5=17 you just replace the x with the 4 then multiply 3 by 4 and add 5