Which words contain an affix? check all that apply. strength unhappy inchworm reread restless comfortable

The words which contain affixes are the following ones:

unhappy

reread

restless

comfortable

Explanation:

Affixes are the category to which both prefixes and suffixes belong. We use affixes when we want to add a certain meaning to a word (a verb, a noun or an adjective):

Adjective "happy" + prefix "un"= unhappy (the prefix implies "not happy").

Verb "read" + prefix "re"= reread (the prefix implies repetition).

Verb "rest" + suffix "less"= restless (the verb is modified by the suffix, and the word becomes an adjective that carries the idea of denial: someone who does not rest).

Abstract noun "comfort" + suffix "able"= comfortable (the noun is modified by the suffix and becomes an adjective: an object or a place that offers comfort).

3 is blunder, i’m not sure about the last one but the first two look correct