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   ACBD-BDAC

Step-by-step explanation:

It is convenient to compare the values of each of the functions when h=1. On the graphs, find 1 on the horizontal axis, then read the value of the function at that point from the vertical axis.

For the equations, the value for h=1 will be its coefficient in the equation.

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1) a: 80,b: 50, c: 75, d: 30

Fastest to slowest is ACBD.

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2) a: 4, b: 2, c: 8, d: 3

Slowest to fastest is BDAC

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The code is these lists, separated by a dash: ACBD-BDAC.

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb