Alguém poderia me explicar ??

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?

Which table represents points on the graph of h(x) = 3√-x+2?