Last year gasoline sold at 50 cents per litre. now it sells for 54.5 cents per litre. find the percent increase.

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answer: what is the question you're trying to ask?

step-by-step explanation:

is there supposed to be a diagram or a graph for this one? ?

step-by-step explanation:

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)