A train is moving at 15 m/s, while steam is shut off and brakes are applied. The speed of the train in meters per second after t seconds is given by the table t to =0 t =5 t2 =10 t3 =15 t4 =20 ts =25 t6 =30 t7 =35 tg =40 15 11 7.2 6.1 5.3 4.5 3.8 3.15 Determine how far the train has moved in the 40 seconds, using Simpson's Rule.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.