12 inches in 1 foot and 5,280 feet in 1 mile.

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)

step-by-step explanation:

a'(12.5,11.25)

slope=(y1-y2)/(x1-x2)

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6: 4= 3/2

18: 8= 9/4

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