What is the pattern in each sequence? a) 18, 25, 32, ... b) -13, -6, 1, 8, ... c) 104, 107, 110, 113, ... d) -17, -14, -11, ...

The pattern starts at 18 and jumps to 25.

The next jump is from 25 to 32.

The pattern is adding 7 to the previous number.

The pattern starts at $-13$ and jumps to $-6$.

The next jump is from $-6$ to 1: $1 - (-6) = 1 + 6 = 7$.
The next jump is from 1 to 8: $8 - 1 = 7$.
The pattern is adding 7 to the previous number.

The pattern starts at 104 and jumps to 107.

The next jump is from 107 to 110: $110 - 107 = 3$.
The next jump is from 110 to 113: $113 - 110 = 3$.
The pattern is adding 3 to the previous number.

The pattern starts at $-17$ and jumps to $-14$.

The next jump is from $-14$ to $-11$: $-11 - (-14) = -11 + 14 = 3$.
The next jump is from $-11$ to $-8$: $-8 - (-11) = -8 + 11 = 3$.
The pattern is adding 3 to the previous number.