A few days ago
i need help!! i have no idea how to do the math problem: f(j(3)) when f(x)=-3x+2 and j(x)=5 – x?
i need help!! i have no idea how to do the math problem: f(j(3)) when f(x)=-3x+2 and j(x)=5 – x?
Top 2 Answers
A few days ago
Favorite Answer
j(x)=5-x , and then j(3)= 5-3=2
because just f(j(3)) when f(x) = -3x+2
f(j(3))=f(2)=-3*2+2=-4
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A few days ago
Look at the first part: f(j(3)) when…..f(x)…..and j(x)……
The first part is f(j(x)). So when you actually put j(x) in f(x) it looks like this:
f(j(x))= -3(5-x)+2
notice the first part again: f(j(3))….they have a 3 when the x goes….so x=3. Sub for x:
f(j(3))= -3(5-3)+2
= -3(2) + 2
= -6 +2
= -4
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