Use the function rulef(x)=3x-2 . Find the output f(1.5).

Question

A.2.5
B.–2.5
C.6.5
D.–6.5

This is not working out for me...can someone show me how to do this please...

Answer 1

f ( 1.5 ) = 3 * 1.5 - 2 = 4.5 - 2 = 2.5

Answer : A

Answer 2

so does that mean that 1.5 =2.5...I am sorry I just don't understand this yet...I thought they had to equal the same amount...?

Answer 3

f ( x ) mean : " f is a function of x "

f ( 1.5 ) are value of FUNCTION 3 x - 2 when x = 1.5

so of f ( 1.5 ) = 2.5

Answer 4

ok...thank you