Ask
your own question, for FREE!
Mathematics
66 Online
eviant:
Let f(x) = -2x - 7 and g(x) = -4x + 6. Find (f*g)(-5)
Still Need Help?
Join the QuestionCove community and study together with friends!
eviant:
@mhchen
mhchen:
I think (f*g)(-5) = f(-5)*g(-5). so first find f(-5)
eviant:
10x+35
mhchen:
uh well f(-5) = -2(-5) - 7 = 10 - 7 = 3
mhchen:
I'm not sure how you got 10x + 35, Did you see what I did? Try to find g(-5) now,
Still Need Help?
Join the QuestionCove community and study together with friends!
eviant:
-4(-5)+6 20+6 26?
mhchen:
Yup so all you have to do now is multiply f(-5) and g(-5) together 3 * 26
eviant:
78?
mhchen:
ye
eviant:
3 –6 26 –59
Still Need Help?
Join the QuestionCove community and study together with friends!
mhchen:
oh are those the options?
eviant:
^^those are the choices
mhchen:
HMMMmmmmm
mhchen:
okay I'm gonna assume (f*g)(x) is (fog)(x) or f(g(x)) a composite function
mhchen:
basically first you find g(-5) which you already did. It was 26 Then you plug 26 into f(x)
Still Need Help?
Join the QuestionCove community and study together with friends!
mhchen:
Can you find f(26)?
eviant:
@mhchen -2(26)-7=-59?
mhchen:
yep
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
acehuert:
Try to be best 'Cause you're only a man And a man's gotta learn to take it Try to
8 minutes ago
4 Replies
2 Medals
acehuert:
I know you're somewhere out there Somewhere far away I want you back, I want you
14 minutes ago
10 Replies
1 Medal
acehuert:
Beautiful girls all over the world I could be chasing but my time would be wasted
24 minutes ago
2 Replies
1 Medal
acehuert:
I'm at a payphone, trying to call home All of my change I spent on you Where have
31 minutes ago
1 Reply
2 Medals
acehuert:
Oh, oh, yeah Oh, oh, yeah If the heart is always searching Can you ever find a ho
35 minutes ago
5 Replies
2 Medals
acehuert:
Much as you blame yourself, you can't be blamed for the way that you feel Had no
33 minutes ago
14 Replies
1 Medal
acehuert:
Another day has gone I'm still all alone How could this be? You're not here with
32 minutes ago
9 Replies
2 Medals
steak:
life is like a dark tunnel you cant always see the light at the end of the tunnel
1 hour ago
2 Replies
1 Medal
D14610:
The graph below shows a company's profit f(x), in dollars, depending on the price of pencils x, in dollars, sold by the company: Part A: What do the x-inter
1 hour ago
1 Reply
0 Medals
steak:
if anyone tells you not to be yourself being yourself is what made you different
32 minutes ago
5 Replies
0 Medals