Question

Given the following functions f(x) and g(x), solve (f + g)(5) and select the correct answer below:

f(x) = 8x − 13

g(x) = x − 9

Answer 1

A.23
B.27
C.31
D.40

Answer 2

Please help

Answer 3

add 8x - 13 + x - 9 then solve for x
by substituting 5

Answer 4

8(5) - 13 + (5) - 9

Answer 5

Thank you

Answer 6

np x

Answer 7

So 23

Answer 8

yes!!

Answer 9

Could you help me with one more?

Answer 10

sure

Answer 11

Tablets are on sale for 15% off the original price (t), which can be expressed with the function p(t) = 0.85t. Local taxes are an additional 8% of the discounted price (p), which can be expressed with the function c(p) = 1.08p. Using this information, which of the following represents the final price of a tablet with the discount and taxes applied based on its original price?

Answer 12

c[p(t)] = 0.918t
c(p) + p(t) = 1.93t
c(p) ⋅ p(t) = 0.918pt
t[c(p)] = 1.93p

Answer 13

I dont understand this at all.

Answer 14

yeah i'm not sure

Answer 15

Another one?

Answer 16

nengeni you know?

Answer 17

Given the following functions f(x) and g(x), solve f[g(6)] and select the correct answer below:

f(x) = 6x + 12

g(x) = x − 8

Answer 18

@090909090909

Answer 19

−96
0
24
48

Answer 20

okay this is super easy you got this
since (g(6)) is in parentheses, you solve that first
plug in 6 for x in the function g(x)
g(x) = 6 - 8

Answer 21

Okay

Answer 22

the answer you get from that is what you plug into the function f(x) as x

Answer 23

So i plug in -2 for X?

Answer 24

So my answer is 0 :D

Answer 25

yes, f(x) = 6(-2) + 12

Answer 26

yep! B

Answer 27

Thank you so much can you help me with a few more like that?

Answer 28

sure post them

Answer 29

Alright awesome
Given the following functions f(x) and g(x), solve (f ⋅ g)(3) and select the correct answer below:

f(x) = 4x2 + 12

g(x) = x − 1

Answer 30

47
−47
96
−96

Answer 31

is it \[4x^2 + 12\]

Answer 32

Yes

Answer 33

aight. expanded out, this would be written as (4(3)^2 + 12)*(3 - 1)

Answer 34

So do i solve for that expanded form?2

Answer 35

start with 4(3)^2 + 12

Answer 36

follow order of operations, once you get an answer, multiply it by (3-1)

Answer 37

156?

Answer 38

312 0-0

Answer 39

NO, NO

Answer 40

Oh wait sorry XD

Answer 41

i did 4*3^2

Answer 42

order of operations : parentheses, exponents, multiplication

Answer 43

yes so square 3 and then multiply

Answer 44

96

Answer 45

yes

Answer 46

Thats my answer o-o

Answer 47

yes

Answer 48

Awesome another one if thats fine by you

Answer 49

yep

Answer 50

Given the functions k(x) = 5x − 8 and p(x) = x − 4, solve k[p(x)] and select the correct answer below.

Answer 51

k[p(x)] = 5x − 12
k[p(x)] = 5x − 28
k[p(x)] = 5x2 − 12
k[p(x)] = 5x2 − 28

Answer 52

its 5x^2

Answer 53

what k[p(x)] means is: substitute the function p(x) as x in the function k(x)

Answer 54

0k

Answer 55

I dont understand o-o

Answer 56

5(x - 4) - 8
you see how the function p(x) acts as x in the function k(x)?

Answer 57

distribute first and then solve

Answer 58

ok

Answer 59

5x-28

Answer 60

correct

Answer 61

Given the following functions f(x) and g(x), solve f over g (−5) and select the correct answer below:

f(x) = 2x − 20

g(x) = x − 1

Answer 62

−5
5
one sixth
30

Answer 63

one sixth = 1/6

Answer 64

@090909090909

Answer 65

5

Answer 66

Thank you :)

Answer 67

i actually have to leave but if you have anymore questions open up a new thread and i'm sure you'll get answers

Answer 68

alright thanks :) have a great rest of your day