Choose the graph of the inequality x >2

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

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250

What number gives you a irrational number when added to 2/5