Choose all the values of b that make the following statement true: 7/30 = 28/b .

A. 830/7
B.110
C.120
D.130

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

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?

Need solving this 2nd limit problem.