Question

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Answer 1

Answer:

See below.

Step-by-step explanation:

First rule:-  Each value of y after the first one is obtained by multiplying the previous  value by 1.5, ( Note  11.25 / 7.5 = 1.5 and 7.5 / 5 = 1.5).

The relationship is  a(n) =  5 * 1.5^(n-1)

Second Rule:-   Note:-  12 - (-6) = 18 and 30 - 12 = 18.  So we add 18 to get the next term in this rule.

Relationship is a(n) = -6 + 18(n - 1).