radomes.openskiesproject.org
mindoflogic mindoflogic
  • 30-12-2016
  • Mathematics
Answered

Let f(x) = -2x - 7 and g(x) = -4x + 6. Find (f o g)(-5)

A–6
B3
C26
D–59

Verified Answer :

kinglanguages
kinglanguages kinglanguages
  • 30-12-2016

the answer is -6 .so the (f o g) is -6

Answer Link
apologiabiology
apologiabiology apologiabiology
  • 30-12-2016

(f o g)(x) means f(g(x))
one way to find (f o g)(-5) is to find the value of g(-5) then subsitute that for x in f(x)

so
g(5)=-4(-5)+6
g(5)=20+6
g(5)=26

f(g(5))=f(26)=-2(26)-7
f(g(5))=-52-7
f(g(5))=-59

answer is D

Answer Link

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