Question

if f(x) = x − 4 and g(x) = 1/2 x − 2, find f[g(−6)].

9

3

−9

−3

Answer 1

are you able to find g(-6) ?

Answer 2

no i havent been thought thislesson this is th epretest that i was sent for homework

Answer 3

tought

Answer 4

g(x) = 1/2 x − 2

g(-6) = (1/2)(-6) − 2 ... replace every x with -6

g(-6) = -6/2 − 2

g(-6) = -3 − 2

g(-6) = ???

Answer 5

-5?

Answer 6

good

Answer 7

so g(-6) = -5

Answer 8

this means

f[g(−6)]

is the same as

f(-5)

after you replace the "g(-6)" with -5 (they are the same, so you can do this)

Answer 9

now what is f(-5) ?

Answer 10

i have no idea honestly

Answer 11

we are given f(x) = x − 4

Answer 12

to find f(-5), we just replace each x with -5 and evaluate

f(x) = x − 4

f(-5) = -5 − 4

f(-5) = ???

Answer 13

-9

Answer 14

good

Answer 15

that's your final answer because f(-5) = f[g(−6)]

Answer 16

i understand it now thank you sooo much!

Answer 17

you're welcome