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Let f(x) = -2x - 7 and g(x) = -4x + 3. Find (f ° g)(-5).

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can you find g(-5) = ????
after you find g(-5), put that answer into f...
I'm a little lost, so pretty much just do this, -2*(-5) -7 and -4*(-5) + 3? Is that what your saying?

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yes... but i only wanted g(-5)... so g(-5) = -4*(-5) + 3 = ???? what's the answer here?
good... now that you found g(-5)=23, that 23 goes into f. so you need to find f(23) = ???
It would be -53 wouldnt it?
that is the definition of (f ° g)(-5) = f(g(-5))
yes.... :) f(23) = -2*(23) - 7 = -46 -7 = -53
good work... :)
Thanks for your help.! =)

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