What's the difference between an algebraic expression and an equation ?

an expression can include numbers, variables, operators, sets, matrices, and other single things that can all be evaluated to one thing. An equation is two expressions that are equal to each other. ... An equation is two expressions that are equal to each other.

Step-by-step explanation:

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f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50