If f(x)= 3x²-3/√2x+1, then f(4) =

(1) 45
(2)15
(3)3
(4)17

Eric drew a scale drawing of a country park. the scale he used was 1 inch = 2.5 yards. the picnic area is 80 yards wide in real life. how wide is the picnic area in the drawing ?

I'll give brainliest if you answer right : )

Write an algebraic expression for the word expression the quotient of c and 8