Which unit rate corresponds to the proportional relationship shown in the graph? Drag and drop the answer into the box to match the graph with its unit rate.

A graph with a line running through coordinates left parenthesis 0 comma 0 right parenthesis and coordinates left parenthesis 8 comma 10 right parenthesis.

answer: .75 km

step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

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