Ineed ! asap, & you! i don't really understand what it means, or even how to answer it, for that matter, if someone could , i'd be gladly

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

Use the distributive property -7(-2x+u-2)

Someone me! will award brainliest if u explain and answer!