Please help. Give all 3 expressions.

(15/100*percentage fee* x O*Original price* + C*car price*)

1 expression: (15/100 x O) + C

2 expression: (15/100 + C) x (O + C)

3 expression: C + (O x 15/100)

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

yes

step-by-step explanation:

give me the question

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