Find a tangent vector of unit length at the point with the given value of the parameter t. r(t) = (7 + t^2)i + t^2j t = 1

Plz- which of the following explains the growth of fundamentalism in the 1920s? -fundamentalism encouraged racial pride and inspired a "back-to-africa" movement. -americans were uneasy about rapid social change and supported traditional religious beliefs. -americans wanted to increase women's opportunities in the workplace following world war i.