Question

Find the pattern in the set of data. Then write and equation.
x values:1,2,3,4,5,6,7
y values:1,3,7,15,31,63,127

Answer 1

@Hero

Answer 2

I know they add ,4,8,16,32,64

Answer 3

@zepdrix

Answer 4

@Rea201

Double the previous value of y and add what number?

Answer 5

Ohh ok but what would the equation be? I see your multiplying the previous y by 2 and adding 1.

Answer 6

2^1 - 1 = 2-1 = 1
2^2 - 1 = 4-1 = 3
2^3 - 1 = 8-1 = 7
2^4 - 1 =16-1=15

How would you write 31 in this way? @Rea201

Answer 7

2^5-1