a pen is marked down 40% from the original price the original price was $50 what is the sale price of the pen before sales tax?
2 answers:
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Answer:
see attached
Step-by-step explanation:
a) A system of equations has no solutions when the graphs of those equations do not intersect. If the equations are equations of a line, then the lines must be parallel in order for them not to intersect.
Any parallel line will do.
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b) There is one solution when the graphs intersect in exactly one point.
Any line that crosses the one shown will do.
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c) There are infinite solutions when the graphs describe the same curve.
A line overlapping the one shown is the one you want.
