Question

Which diagram best represents the following expression?

2(n - 1) + 1


W.
X.

Y.
Z.

Answer 1

@hartnn do u think u can help me please

Answer 2

It's Y.

What the expression says is; multiply the PREVIOUS part by 2 and add 1.

the n-1 part says to look at the NUMBER of the last row, multiply by 2 and add one.

So row 2 is: 2(number next to row 1) + 1 -> 2*1 + 1 = 3 dots
Row 3 is: 2(number next to row 2) + 1 -> 2*2 + 1 = 5 dots
Row 4 is: 2(number next to row 3) + 1 -> 2*3 + 1 = 7 dots

Answer 3

yes @Mieeeel so what does that mean like what am i suppose to do or the answer