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Answer :

In the given expression :

  • a = b - 21

rate of change = 1

Initial condition = - 21

Answer:

  • Option B

Step-by-step explanation:

Given relationship:

  • a = b - 21

It could be shown as:

  • a = 1*b + (-21)

The rate of change is 1 and the initial condition is -21.

Correct choice is B