Ineed in this question right 4.5 + π is a. rational because it is a terminating decimal. b. irrational because it is a repeating decimal. c. irrational because it is a non-terminating and non-repeating decimal. d. rational because it is a non-terminating and non-repeating decimal.

(c) irrational because it is a non-terminating and non-repeating decimal.

Explanation: Because of the number π which is irrational, the expression 4.5 + π is also irrational. Irrational numbers are ones that cannot be expressed as a ratio of integers. As such they have non-terminating decimal expansion with no pattern in the decimal digits (incl. no repetition)

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