15 points. Need help with this math test

Estimate each quotient. show the compatible numbers you use. 0.00438 ÷ 0.00072

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

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?