Can you tell me what the equation is in standard form ? Y - 9 =2(x+9)

Which graph represents the solution of the inequality?

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

The half-life of a certain material is 0.004 second. approximately how much of a 20-gram sample will be left after 0.016 second? a. 5 grams b. 16 grams c. 0.32 gram d. 1.25 grams