A person purchased a leather jacket that was marked down 40%. If the sale price of the jacket was 100.77, what was its original
1 answer:
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Make equal to 0
minus 12from both sides
x^2+10x+13=0
we can't factor so use quadratic formula
x=
x=
x=
x=
x=
x=
x=
or 
aprox
x=-1.5359 or -8.4641
minus 12from both sides
x^2+10x+13=0
we can't factor so use quadratic formula
x=
x=
x=
x=
x=
x=
x=
aprox
x=-1.5359 or -8.4641