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
Vesnalui [34]
3 years ago
10

Which of the following represents f(-3)? A: 7 B: 5 C: 1 D: -1 ​

Mathematics
2 answers:
Fed [463]3 years ago
7 0

Answer:

f(-3)=-1

Step-by-step explanation:

-3 is less than 0, so you are going to use f(x)=x+2.

Plug in values:

f(-3)=-3+2\\f(-3)=-1

MatroZZZ [7]3 years ago
3 0

Answer:

D

Step-by-step explanation:

Because x < 0 for x + 3

= -1

You might be interested in
4. Marcella has 4 fewer male cousins than female cousins. Let f represent the number of female cousins. Write an expression for
sladkih [1.3K]
F - 4 = number of boy cousins.
4 0
3 years ago
The table gives estimates of the world population, in millions, from 1750 to 2000. (Round your answers to the nearest million.)
BaLLatris [955]

Answer:

A.) 1508 ; 1870

B.) 2083

C.) 3972

Step-by-step explanation:

General form of an exponential model :

A = A0e^rt

A0 = initial population

A = final population

r = growth rate ; t = time

1)

Using the year 1750 and 1800

Time, t = 1800 - 1750 = 50 years

Initial population = 790

Final population = 980

Let's obtain the growth rate :

980 = 790e^50r

980/790 = e^50r

Take the In of both sides

In(980/790) = 50r

0.2155196 = 50r

r = 0.2155196/50

r = 0.0043103

Using this rate, let predict the population in 1900

t = 1900 - 1750 = 150 years

A = 790e^150*0.0043103

A = 790e^0.6465588

A = 1508.0788 ; 1508 million people

In 1950;

t = 1950 - 1750 = 200

A = 790e^200*0.0043103

A = 790e^0.86206

A = 1870.7467 ; 1870 million people

2.)

Exponential model. For 1800 and 1850

Initial, 1800 = 980

Final, 1850 = 1260

t = 1850 - 1800 = 50

Using the exponential format ; we can obtain the rate :

1260 = 980e^50r

1260/980 = e^50r

Take the In of both sides

In(1260/980) = 50r

0.2513144 = 50r

r = 0.2513144/50

r = 0.0050262

Using the model ; The predicted population in 1950;

In 1950;

t = 1950 - 1800 = 150

A = 980e^150*0.0050262

A = 980e^0.7539432

A = 2082.8571 ; 2083 million people

3.)

1900 1650

1950 2560

t = 1900 - 1950 = 50

Using the exponential format ; we can obtain the rate :

2560 = 1650e^50r

2560/1650 = e^50r

Take the In of both sides

In(2560/1650) = 50r

0.4392319 = 50r

r = 0.4392319/50

r = 0.0087846

Using the model ; The predicted population in 2000;

In 2000;

t = 2000 - 1900 = 100

A = 1650e^100*0.0087846

A = 1650e^0.8784639

A = 3971.8787 ; 3972 million people

3 0
3 years ago
Find the total number of outcomes in each experiment. Write your answers on a sheet of paper.
nevsk [136]

Answer:

Step-by-step explanation:

In each option you need to find the number of outcomes of a single event and then multiply that by the number of times that event takes place.

1. 2 outcomes (heads and tails)

2. 6 outcomes (2 outcomes * 3 tosses)

3. 60 outcomes (6 outcomes per die * 10 rolls)

4. 12 outcomes (6 outcomes per die * 2 rolls)

5. 10 outcomes (10 numbers on the pad)

6. 52 outcomes (52 cards in a regular deck)

7. 32 outcomes (32 letters in the alphabet)

8. 7 outcomes (7 letters to choose from)

9. 10 outcomes (10 letters to choose from)

10. 36 outcomes (36 crayons to choose from)

4 0
3 years ago
What is -x^2 if x=-2
yanalaym [24]

Answer:

-4

Step-by-step explanation:

plug in -2

-(-2)^2 = -4

4 0
3 years ago
Read 2 more answers
PLEASE a help me (pre algebra)
irakobra [83]

Answer:

it's in order

1.   j: 71

2. j: 16

3. j: 10

4. j: 68

5. j: 61

4 0
2 years ago
Read 2 more answers
Other questions:
  • A random sample of 9 wheels of cheese yielded the following weights in pounds has a sample mean of 20.90 and a sample variance o
    13·1 answer
  • Casey Bought 9 Tickets To A Concert The Total Charge Was $104 Including A $5 Service Charge
    5·1 answer
  • Find the probability of getting exactly 8 girls in 10 births
    13·1 answer
  • Which of the following functions is graphed below?
    7·1 answer
  • A department store is having a sale in which every item is 38% off its original price. The regular price of a suit is $112. How
    10·1 answer
  • A car cost $20,000 when it was purchased. The value of the car decreases by 8% each year. Find the rate of decay each month and
    7·1 answer
  • What is domain and range in math
    9·1 answer
  • What is the length of a box that is 5 inches wide, 10 inches tall,a d has a volume of 150 cubic inches
    10·1 answer
  • Who can help me please
    10·1 answer
  • What is the domain and range ?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!