HELP PLS :( At a closed landfill, trash is decaying at a rate of 50% every 15 years.

Which type of function best models the amount of
trash that is remaining after x years?

linear
exponential
quadratic
cubic

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

Simply 8x squared + 5(7x squared- x) - 2x =

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?