5 TEST REVIEW Determine whether each rate of change is constant. If it is, find the rate of change and explain what it represents

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Find the cosine function that is represented in the graph.

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