Determine whether the given description corresponds to an observational study or an experiment. in a study of 444studentswith a particular disease, the subjects were photographed daily. nothingdoes the given description correspond to an observational study or an experiment? a. the given description corresponds to an observational study. b.the given description corresponds to an experiment. c.the given description does not provide enough information to answer this question.

no this is a nonlinear negative

it would open into a square depending on the type of envelope i’m not sure about the second part

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.