I irow247 New member Joined Mar 31, 2006 Messages 1 Mar 31, 2006 #1 Hey this seems really stupid but i have my sat tomorrow and i understand everything on the math section EXCEPT functions. rotten things. Let the function f(x)=x+1. If 2f(p)=20, what is the value of f(3p)? J
Hey this seems really stupid but i have my sat tomorrow and i understand everything on the math section EXCEPT functions. rotten things. Let the function f(x)=x+1. If 2f(p)=20, what is the value of f(3p)? J
pka Elite Member Joined Jan 29, 2005 Messages 11,978 Mar 31, 2006 #2 If f(x)=x+1 and 2f(p)=20, what is the value of f(3p)? 2f(p)=20 implies f(p)=10. But f(p)=p+1, so p=9. f(3p)=f(27)=27+1=28
If f(x)=x+1 and 2f(p)=20, what is the value of f(3p)? 2f(p)=20 implies f(p)=10. But f(p)=p+1, so p=9. f(3p)=f(27)=27+1=28
