1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rasek [7]
3 years ago
12

If f(x) = 3x - 1 and 2f(b) = 28, what is the value of f(2b)?

Mathematics
1 answer:
Vlad1618 [11]3 years ago
3 0
<h3>Answer:  29</h3>

=================================

Work Shown:

Solve the second equation for f(b)

2f(b) = 28

f(b) = 28/2

f(b) = 14

----------

Plug in x = b and solve for b

f(x) = 3x-1

f(b) = 3b-1 ... replace every x with b

14 = 3b-1 ..... plug in f(b) = 14

3b-1 = 14

3b = 14+1

3b = 15

b = 15/3

b = 5

-----------

f(x) = 3x-1

f(2b) = 3(2b)-1 .... replace every x with 2b

f(2b) = 3(2*5)-1 .... plug in b = 5

f(2b) = 3*10-1

f(2b) = 30-1

f(2b) = 29

You might be interested in
The graph of f(x) = log x + 3 is the graph of<br> g(x) = log x translated 3 units |
vesna_86 [32]

Answer: 3 units up //

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Marie spends 14 dollars on lottery tickets every week and spends $128 per month on food. On an annual basis, the money spent on
NeTakaya

The money spend on lottery tickets is 40%

5 0
2 years ago
The system of equations graphed below has how many solutions ?
amm1812
Their parallel so never
4 0
3 years ago
Read 2 more answers
How to solve cube root of 8a⁶​
Elena-2011 [213]

Answer:

2 a^2

Step-by-step explanation:

cube root of 8 = 2    cube root a^6 = a^2

8 0
1 year ago
Read 2 more answers
Pls explain how to solve it!
Sophie [7]

Answer:

a = jd

Step-by-step explanation:

We want to solve for a given that a/d = j

To do so we want to isolate a (get a by itself )

We can do this by using inverse operations.

We would want to get rid of the d

A is being divided by d.

The inverse of division is multiplication so to get rid of the d we multiply a/d by d but whatever we do to one side we must do to the other so we multiply both sides by d

a/d * d = a

j * d = jd

we are then left with a = jd

And we are done!

5 0
2 years ago
Read 2 more answers
Other questions:
  • Practice worksheet : relations and functions
    8·2 answers
  • Jamie go shopping for Christmas and saves $27.75 with a 15% off coupon what was her total bill
    7·1 answer
  • What is z2+z+4z3+4z2?
    5·2 answers
  • Please help me solve. Surface area of this pyramid?
    15·1 answer
  • NEED ANSWER ASAP <br> MARKING BRAINLIEST
    13·1 answer
  • To obtain the graph of y = (x - 8)2, shift the graph of y = x2 units.
    10·2 answers
  • Let f(x)=x-1 and g(x) = x2 + 4.<br> Find (fog)(-6).<br> Then (fog)(-6)= (Simplify your answer.)
    8·1 answer
  • Help ASAP PLEASE look at it help plsease​
    6·2 answers
  • If an investor wants to earn $250 simple interest by investing $600 at 4.5% annual interest, how many years will it take for her
    10·1 answer
  • The coordinate plane shows Line A B.<br> What is the length of the line segment?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!