Total sales amounted to 27,650.00 and he recieved 1,382.50 in comission. what is his rate of comission

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

How do you use the elimination method for this question? explain, because i really want to understand!