Question

If f(x) = x 2 + 1 and g(x) = 3x + 1, find [f(4)] 2.


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289

Answer 1

x^2 and the 2 at the end being the same.

Answer 2

so is it f(x)=x^2+1 and g(x)=3x+1, find [f(4)]^2

Answer 3

yes

Answer 4

Can you tell me what is f(4) when f(x) = x^2 + 1?

Answer 5

no? I don't know how to do this.

Answer 6

take 4 and plug it in the place of x

Answer 7

Just put x = 4 in f(x) and find the value

Answer 8

this is funtions

Answer 9

f(x) = x^2 + 1
f(4) = 4^2 + 1 = ?

Answer 10

i don't know..

Answer 11

If f(x) = x 2 + 1 and g(x) = 3x + 1, find [f(4)] 2.


81
257
289
Those are my three options.

Answer 12

Looks like you just want the answer. I am sorry.

Answer 13

I'm on my last attempt of this whole lesson and I am stuck on just this question

Answer 14

what is 4^2?

Answer 15

4^2 means 4 squared.

Answer 16

yea, what does 4 squared equal?

Answer 17

16?

Answer 18

yes, so
f(4)= 4^2+1
f(4)=16+1 =?

Answer 19

that doesn't equal any of my options though.

Answer 20

remember you have to square f(4)

Answer 21

so 33?

Answer 22

no, what did you get for f(4)=16+1

Answer 23

33?

Answer 24

16+1=?

Answer 25

is 17

Answer 26

yes so f(4)=17
so take 17 and square it
(17)^2=?

Answer 27

289

Answer 28

and is that one of your options

Answer 29

If f(x) = x 2 + 1 and g(x) = 3x + 1, find 2f(1) + 3g(4) help me with this question now?

Answer 30

sure

Answer 31

x2 meaning x^2

Answer 32

for f(1), you would take 1 and plug it in the place of x for the function
f(x) = x^2 + 1

Answer 33

show me how to plug it in

Answer 34

so f(1)=1^2+1?

Answer 35

yup
now what does f(1)=1^2+1=?

Answer 36

3

Answer 37

no, what is does 1^2=?

Answer 38

1?

Answer 39

yea, so f(1)=1^2+1=?

Answer 40

1+1+1 is 3?

Answer 41

no, so 1^2= 1 times 1=1
f(1)=1^2+1
f(1)=1+1=?

Answer 42

4?

Answer 43

what does 1+1=?

Answer 44

2

Answer 45

yea so f(1)=1^2+1=?

Answer 46

I'm so confused. is it 5 or 6?

Answer 47

f(x)=x^2+1
f(1)=1^2+1
f(1)=1+1
f(1)=?

Answer 48

2?

Answer 49

1?

Answer 50

2

Answer 51

now what's the next step from 2?

Answer 52

so since it is 2f(1)
what would 2 times f(1)=?
knowing f(1)=2

Answer 53

4?

Answer 54

yup

Answer 55

so thats half of the problem done
2f(1) + 3g(4)
4 + 3g(4)

Answer 56

now for g(x)=3x+1
what would you plug in for x, knowing that you are looking for g(4)

Answer 57

a 4

Answer 58

yup, what would it look like

Answer 59

g(4)= 3(4)+1?

Answer 60

yup, now what does that equal

Answer 61

13 + 12?

Answer 62

no, so 3(4)=?

Answer 63

12/

Answer 64

12+1=?

Answer 65

13

Answer 66

so g(4)= 3(4)+1?

Answer 67

what would it equal

Answer 68

13 + 14?

Answer 69

or 13 + 13?

Answer 70

no

Answer 71

g(x)=3x+1
g(4)=3(4)+1
g(4)=12+1
g(4)=?

Answer 72

g(4)= 13

Answer 73

yup

Answer 74

so if you look back it says to find
3g(4)
3 times g(4)=?
knowing that g(4)=13

Answer 75

13*3 is 39?

Answer 76

yup

Answer 77

now 2f(1) + 3g(4)=?

Answer 78

4+39?

Answer 79

43

Answer 80

yup
WOOOOHOOOOO

Answer 81

I hate ALG 2, my teacher doesn't know how to teach

Answer 82

ohhh that sucks

Answer 83

you can message me if you have questions

Answer 84

Thanks.