Micaela is 2 years older than sam. in 4 years, the sum of their ages will be 40. how old is micaela now? sam is 15.

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

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

Hi, can anyone show me how to do this problem? 100 points for this. in advance