If 2.5 with a sqaur root of 2 =x.25 than x = what

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Ven the functions, f(x) = 5x2 - 3x + 1 and g(x) = 2x2 + x - 2, perform the indicated operation. when applicable, state the domain restriction. (f - g)(x) 3x2 - 4x + 3 3x2 - 2x - 1 3x2 - 4x - 1 3x2 - 2x + 3

Plz : denver is about 5,200 feet above sea level. which number line best represents this integer?