Find the number that comes next in each sequence. See Example 2. 15, 12, 9, 6, . . . R...

Find the number that comes next in each sequence. See Example 2.

15, 12, 9, 6, . . .

Reference Example 2.

Find the next number in the sequence –2, –4, –6, –8, . . . .Strategy The terms of the sequence are decreasing. We will determine how each number differs from the previous number.

Why This type of examination helps us discover a pattern that we can use to find the next number in the sequence.