So 9 more than 3 times a number, would be:
9+(3x)=-6
then you would solve
subtract 9 from 9 and 9 from -6
you get 3x=-15
divide by 3 on both sides
x=-5
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Answer:angle c angle b angle a
Step-by-step explanation:
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A is the right option! Because 0.40 should be in second equation with the x to represent the number of stamps multiply by 40 cents.