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
Brilliant_brown [7]
3 years ago
11

Given f(x) = 2x2 - 3, what is the value of f(x + 3)?

Mathematics
1 answer:
creativ13 [48]3 years ago
8 0

Answer:

Answer A is correct.

Step-by-step explanation:

Please note the difference beteen f(x+3) and f(3).

So f(x + 3) means, where you see x in the equation, you substitute x+3. (This is a recursive entry).

f(x)= 2x² - 3

f(x)= -3 + 2x²

f(x)= -3 + 2* (x+3)²

f(x)= -3 + 2* (x+3) * (x+3)

f(x)= -3 + 2* (x² + 3x + 3x + 9)

f(x)= -3 + 2* (x² + 6x + 9)

f(x)= -3 + 2x² + 12x + 18

f(x)= 2x² + 12x + 18 -3

f(x)= 2x² + 12x + 15

So answer A is the correct answer

You might be interested in
Who knows please help asap
IgorLugansk [536]

Answer: I am 90% sure it is c. 150

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Help me plz
nikdorinn [45]
A) 36 is your correct answer thank you 

7 0
3 years ago
Read 2 more answers
A rectangle has sides of 9cm by 7.5cm find its perimeter​
Tasya [4]

Answer:

33 cm

Step-by-step explanation:

9 cm + 7.5 cm + 9 cm + 7.5 cm

33 cm

7 0
3 years ago
In a certain city of several million people, 7.7% of the adults are unemployed. If a random sample of 300 adults in this city is
Lilit [14]

Answer: 0.2643

Step-by-step explanation:

Given : The proportion of  adults are unemployed : p=0.077

The sample size = 300

By suing normal approximation to the binomial , we have

\mu=np=300\times0.077=23.1

\sigma=\sqrt{np(1-p)}=\sqrt{300\times0.077(1-0.077)}\\\\=4.61749932323\approx4.62

Now, using formula z=\dfrac{x-\mu}{\sigma}, the z-value corresponding to 26 will be :-

z=\dfrac{26-23.1}{4.62}\approx0.63

Using standard distribution table for z , we have

P-value=P(z\geq0.63)=1-P(z

=1-0.7356527=0.2643473\approx0.2643

Hence, the probability that at least 26 in the sample are unemployed  =0.2643

6 0
3 years ago
Question 20 of 25
Bas_tet [7]

Credit card companies determine their APR based on creditworthiness, or how much risk you pose as a borrower, as well as broader factors like the health of the economy. Creditworthiness is based on criteria such as an applicant's credit history, income and total amount of money owed.

5 0
3 years ago
Other questions:
  • John is making himself a lunch. He has three different soups to choose from, four different kinds of pop, and three different ki
    8·1 answer
  • WILL GIVE BRAINLIST AS SOON AS I CAN is this 32, maybe? i have no idea.​
    13·1 answer
  • 11. The perimeter of a rectangle is 60 cm. The length is four times the width. What
    15·1 answer
  • What are the prime factors of 625?
    11·2 answers
  • Help those who need points
    8·2 answers
  • Compare 3 x 10^-25 and 4.5 x 10^-24, which number is the greatest. Explain your reasoning for the answer you choose.
    7·1 answer
  • What is the approximate area, in square feet, of the figure shown?
    15·1 answer
  • Signment: Exit Tickets---8.4 Lesson 15 (8.EE.8.6)
    11·1 answer
  • Each small square on the grid is 1 ft squared.
    10·1 answer
  • Find the general solution of (x+3)y’=2y
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!