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
musickatia [10]
4 years ago
9

Look at this picture and help me out please

Mathematics
2 answers:
Artemon [7]4 years ago
7 0

First off it's D. How you prove it is by doing y = 2x + 5 ( f(x) represents y)

then from there just treat it like an algebraic equation trying to find x.

y = 2x + 5

y - 5 = 2x

y - 5 / 2 = x

f^-1(x)= y - 5 / 2


Rainbow [258]4 years ago
4 0

your answer is a ok i hope this helpful

You might be interested in
On your cell phone bill, you are charged $0.25 for each text you send. What is the dependent variable?
zhannawk [14.2K]

Answer:

The amount of the bill is dependent on the number of texts sent. Let y be the bill amount and x the number of texts. Then x is independent and y is dependent. This is because x can be any non-negative number, but y depends upon it. You cannot find the bill without knowing the number of text messages, right?

3 0
3 years ago
Read 2 more answers
100 Points!!!
Mars2501 [29]

Let's see

#a

Take 28

  • (28)²
  • (30-2)²
  • 30²-2(30)(2)+2²
  • 900-120+4
  • 780+4
  • 784

#2

Take 9,10

  • 9³+10³
  • (9+10)(9²-9×10+10²)
  • (19)(81-90+100)
  • 19(181-90)
  • 19(91)
  • 1729
7 0
2 years ago
Read 2 more answers
What is the mean of the data 25, 27, 24, 26, 40 and what is the median
krok68 [10]

Answer:

mean is = 28.4

median is = 26

Step-by-step explanation:

mean- average

( 25+ 27+ 24+ 26+ 40 )/5 = 28.4

median- middle

25, 27, 24, 26, 40

{ rearrange }

24, 25, 26, 27, 40

the middle number is 26

6 0
3 years ago
Find the simple interest earned in a savings account that pays 5% interest if $500 is deposited for 4 years. A. $100, B. $1000,
g100num [7]
To calculate simple interest, you first need to multiply the original amount by the percentage of the money which is going to be added.

In this situation, 500 x 0.05 is the interest which will be added each year.
Therefore, $25 will be added each year. Since it is over 4 years, it is (25*4).
So the account will have earned $100 of simple interest.

Although the account will contain $600, it will have EARNED $100 of interest since it started with $500 already.

Answer - A $100 of simple interest will be earned.
3 0
4 years ago
What is an equation of the line that passes through the points (0, -5) and<br> (-5, -1)?
nataly862011 [7]

Answer:

y=mx+b

y=-4/5x+5b

Step-by-step explanation:

(0,-5)

(-5,-1)

-1+5 is 4

-5-0 is -5

-4/5 is the slope

use one of the points and substitute x to find the y intercept, which gives you the full equation, which is y=-4/5x+5

5 0
3 years ago
Other questions:
  • Rewrite each expression using each base only once.
    11·1 answer
  • Joann wants to hang a wallpaper border around the top of her living room walls. The room is 13 ft. by 15 ft. How much border mus
    6·1 answer
  • Which operation should be performed first according to the order of operations?
    15·1 answer
  • Find the area of a relgular polygon with side equal to 3 and apothem equal to K
    10·1 answer
  • Let's Practice
    9·1 answer
  • Half a number is at least 2 units from 20.<br> Please need help!!!
    9·2 answers
  • Someone please help me
    14·1 answer
  • A spinner has 20 total spaces that are either blue or red. The spinner is spun, and a die is rolled. If the probability of landi
    11·1 answer
  • Late night cryin wit santiana lol &lt;3
    13·2 answers
  • If 12g of a radioactive substance are present initially and 8yr later only 6g remain, how much if the substance will be present
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!