Amy, jean, keith, tom, susan, and dave have all been invited to a birthday party. they arrive randomly and each person arrives at a different time. in how many ways can they arrive? in how many ways can jean arrive first and keith last? find the probability that jean will arrive first and keith will arrive last

Acar traveling at 65 mph leaves 25 foot skid mark what is the ratio of the speed to length of skid mark (feet) in the simplest form

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.

Use circumcenter theorem to solve for the given values