Express in simplest form: (3x^2 + 4x - 8) - (-2x^2 + 4x + 2)​

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =

Marcy is conducting a study regarding the amount of time students at her school spend talking to friends online. which group would give marcy the best results for her study?

Jocelyn estimates that a piece of wood measures 5.5 cm. if it actually measures 5.62 cm, what is the percent error of jocelyn’s estimate? a. 2.13% b. 2.18% c. 12% d. 46.83%