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
photoshop1234 [79]
2 years ago
9

Part 1!

Mathematics
1 answer:
kondaur [170]2 years ago
5 0
1.  We have to find the fifth term of f(n) = 7 - 4(n - 1). 
That means x = 5. Substitute 5 into the equation for x. 
f(n) = 7 - 4(5 - 1) 
Subtract 5 - 1. 
f(n) = 7 - 4(4) 
Multiply 4 by 4. 
f(n) = 7 - 16 
Subtract 16 from 7. 
f(n) = -9 
The answer is D. 

2. Since we have to find the first 4 terms, we have to solve for x = 1, 2, 3, & 4. 
Multiply 1, 2, 3, and 4 by 6. We now have: 
f(x) = 6 - 25   f(x) = 12 - 25   f(x) = 18 - 25   f(x) = 24 - 25 
Subtract 25 from the first term: 6, 12, 18, and 24. 
f(x) = -19   f(x) = -13   f(x) = -7   f(x) = -1 
The answer is C. 

3. Now, we have to find the first 3 terms of f(x) = 10(2)^x.  So x is 1, 2, & 3. 
Raise 2 to the powers of 1, 2, and 3. The equations are now: 
f(x) = 10(2)   f(x) = 10(4)   f(x) = 10(8) 
Then multiply 10 by the three terms: 2, 4, and 8. 
f(x) = 20   f(x) = 40   f(x) = 80 
The answer is A. 

4. Find the 21st term of f(n) = 2 + 9(n - 1). Substitute 21 for n. 
f(n) = 2 + 9(21 - 1) 
Subtract 1 from 21. 
f(n) = 2 + 9(20) 
Multiply 9 by 20. 
f(n) = 2 + 180
Add 2 to 180. 
f(n) = 182 
The answer is B. 

5. Which sequence is described by f(n) = 2(3)^x-5. 
This is the only one which I'm not sure how to solve. Since I don't know, I won't answer it because I don't want to give you the wrong answer to the question, sorry about that. 

6. The ninth term in f(n) = 384(1/2)^n-1. Put 9 in for n & subtract 1 from 9. 
f(n) = 384(1/2)^8 
Raise 1/2 to the power of 8.
f(n) = 384(1/256) 
Multiply 1/256 by 384. 
f(n) = 384/256 
Reduce the fraction & make it a mixed number. 
f(n) = 1 1/2 

Hope this helped!
You might be interested in
A. Find a value for x that makes -x less than 2x.
german

Answer:

it B find a value for x that make -x greater than 2x

6 0
2 years ago
Read 2 more answers
Need help now!!!!! :)
brilliants [131]
The 5 is the coefficient...

6 0
3 years ago
What are the factors of x^2 + 3x -4 ?​
algol13

Answer:

1 and -4

Step-by-step explanation:

cause when you factor the equation its (x-1)(x+4)

4 0
3 years ago
Read 2 more answers
A: x ≤ 6<br> B: x ≥ 8<br> C: x ≥ – 8<br> D: x ≤ – 8
ASHA 777 [7]

Answer:

I believe the answer you are looking for is C

Step-by-step explanation:


6 0
3 years ago
What is the quadratic regression equation for the data set?
Svet_ta [14]

Answer:

y=−0.004x2+0.415x−0.546

6 0
2 years ago
Other questions:
  • If a number is divisible by both 2 and 3 then we can say the number is divisible by
    6·2 answers
  • Jane has a 5 × 7-inch photograph that she wants enlarged to a 10 × 14-inch photograph.
    10·2 answers
  • Explain how you would find the number of ounces in 0.25 tons
    14·1 answer
  • What is 70 over 9 in simplest form
    14·1 answer
  • Consider the graphs of f(x) = 5 sin (2x-
    14·1 answer
  • There are 5 red and 9 green balls in a bag. If you randomly choose balls one at a time, with replacement, what is the probabilit
    14·2 answers
  • X+7&lt;13.<br> ^^^^^ answer please &amp; show work .
    14·2 answers
  • Whats the unit rate of 4 and 3/4
    15·1 answer
  • Which is better buy? 5 lb of flour for $0.90 or<br> 8 lb for $1.25
    14·2 answers
  • Letters a, b, c, and d are angle measures.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!