If f(x) = 2x + 3 and g(x) = x2 + 1,find f(g(3)).

Answers

Answer 1
Answer:

Answer:

The value of f(g(3)) is 23.

Step-by-step explanation:

The given functions are

f(x)=2x+3

g(x)=x^2+1

We have to find the value of f(g(3)).

Substitute x=3 in the function g(x) to find the value of g(3).

g(3)=3^2+1=9+1=10

f(g(3))=f(10)                       [g(3)=10]

Substitute x=10 in the function f(x) to find the value of f(10).

f(10)=2(10)+3=20+3=23

Therefore the value of f(g(3)) is 23.

Answer 2
Answer: Hello,

f(g(3))=f(3²+1)=f(10)=2*10+3=23
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Which of the following equations has infinitely many real solutions? A. 4x + 1 = x - 1 B. 4x + 1 = 4x - 1 C. 4(x - 7) = 4x + 28 D. 4(x - 7) = 4x - 28

Answers

The equation that has infinitely many real solutions is:

B. 4x + 1 = 4x - 1

In this equation, when you simplify it, you'll find that it states 1 = 1, which is always true. This means there are infinitely many solutions because any value of x would make the equation true.

What is the solution of the system? Use substitution. 3x + 2y = 7
y = –3x + 11
A.(6, -3)
B.(6, -7)
C.(-4, 19/2)
D.(5, -4)

Answers

Substitution is where you substitute, basically. So, substitute "y" for y.

They have given you y: -3x+11.

They have also given you an equation for you to substitute y into: 3x+2y=7.

Now, you can create the substituted problem.

3x + 2(-3x + 11 ) = 7

Use distributive property.

3x + -6x + 22 = 7

Add like terms.

-3x + 22 = 7

Subtract 22 from 7.

-3x = -15

Divide.

x = 5.

Now, that you have x, plug "5" back into the original equations or at least one of them to find your y.

I will do both to show you.

3(5) + 2y = 7

15 + 2y = 7

2y  = -8

y = -4

You would get -4 with the other equation, too.

y = -3(5) + 11

y = -15 + 11

y = -4

Now, since you have x= 5, y= -4, that would be equivalent to (5, -4) which would be answer choice D.

*side note* because only one of the answer choices started with x being equivalent to y, you wouldn't need to go through finding y as the only possible answer choice could be D. However, it is always good to check and make sure you didn't do anything wrong with x by finding y. Also, I have done y for you not only in my benefit, but to show you what you would do if  D wasn't so obvious when you only find x.

41 feet to yards, express the answer using a mixed fraction

Answers

there are 3 feet in a yard
so how many times can 3 go into 41 (13 times)
3 x 13 = 39
41 -39 = 2

13 2/3

Hope this helped!

In the function f(x) what is f(3)

Answers

Hello there!

f(x)=x
f(x) is also known as y
x is 3, which means the x value on the right is 3

Answer: f(3)=3

Solve 2√3+3√7 adding fraction

Answers

2√3=3.46
3
√7= 7.95

add them together equals 11.41

hope this helped!!!

32% of what number is 56

Answers

let 32% of x = 56

32%*x = 56
32/100 *x = 56
x = 56*100/32
x = 5600/32 = 175

hence, 32% of 175 is 56.