What kind of system is the set of equations? -5x+3y=-5 -5x+3y=1

What is the common difference in the following arithmetic sequence 7,3,-1,-5

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?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*