Anna is going to play guitar in her school's annual concert. if she starts by practicing for one hour per day and increases the time by 30 minutes each day, how long will she practice on the seventh day? a. 140 minutes b. 210 minutes c. 240 minutes d. 300 minutes

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

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