Question

A coal car on a train weighs 30 tons plus 1 ton per cubic yard of coal x that it carries. The total weight of a coal car is: f(x) = x + 30. How will the graph of this function change if the coal car weight is changed to 26 tons?
A.) The line will shift vertically up by 4 tons.
B.) The line will shift vertically up 26 tons.
C.) The line will shift vertically down by 4 tons.
D.) The line will shift vertically down by 26 tons.

Answer 1

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