Indicate a herbal rule for the nth term of this sequence. -6a, -3a, 0a, 6a
1. an=3an+9a
2. An=3an-9a
3. An=-3an+9a
4. An=_3an-9a

60%

2 equivalent expressions to represent the area of a rectangle and the top is n-3 and the side is 2

area of the rectangle = length * width

given length = n - 3

width = 2

replace it in the area

so area of the rectangle = (n-3) *2

= 2(n-3)

one of the expression is 2(n-3)

to get another expression we distribute 2 inside the parenthesis

2(n-3) is 2n - 6

so another expression is 2n - 6

two equivalent expression are

2(n - 3)   , 2n - 6