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
Mekhanik [1.2K]
3 years ago
13

Some carpet cleaning costs are shown in the table. The relationship is linear. Find and interpret the rate of change

Mathematics
2 answers:
Artemon [7]3 years ago
4 0
Y = m x + b , where m is the slope. The slope is the rise over the run or the change in x ( rooms cleaned ) over the change in y ( cost ).
125 = m * 1 + b
175 = m * 2 + b
-----------------------
b = 125 - m
175 = 2 m + 125 - m
m = 175 - 125
m = 50 ( the rate of change ),  b = 75
The formula is:  y = 50 x + 75
It means that the starting cost will be $75 and that for every room cleaned, the cost will rise for $50. 
levacccp [35]3 years ago
3 0

Answer:

y = m x + b , where m is the slope. The slope is the rise over the run or the change in x ( rooms cleaned ) over the change in y ( cost ).

125 = m * 1 + b

175 = m * 2 + b

-----------------------

b = 125 - m

175 = 2 m + 125 - m

m = 175 - 125

m = 50 ( the rate of change ),  b = 75

The formula is:  y = 50 x + 75

It means that the starting cost will be $75 and that for every room cleaned, the cost will rise for $50. 



You might be interested in
A colony of bacteria grows 5% every hour.How long does it take for the colony to double in size ? with show working ​
KIM [24]

5%=1hour

100% =?

100×1/5

20 hours

for it to double it needs to replicate itself by100%

8 0
3 years ago
Please help with my straight lines!!
Mrrafil [7]
Where is the question
8 0
3 years ago
Help me solve thank you will give 20 points
laila [671]

Answer:

Natalie bought 500 apples at $0.40 each, then she pays $0.40 500 times, this means that the total cost of the 500 apples is:

Cost = 500*$0.40 = $200

Now she threw away n apples from the 500 apples, then the number of apples that she has now is:

apples = 500 - n

And she sells the remaining apples for $0.70 each.

a) The amount that she gets by selling the apples is:

Revenue = (500 - n)*$0.70

b) We know that she did not make a loss, then the revenue must be larger than the cost, this means that:

cost ≤ revenue

$200 ≤ (500 - n)*$0.70

c) We need to solve the inequality for n.

$200 ≤ (500 - n)*$0.70

$200/$0.70 ≤ (500 - n)

285.7  ≤ 500 - n

n + 285.7 ≤ 500

n ≤ 500 - 285.7

n ≤ 214.3

Then the maximum value of n must be equal or smaller than 214.3

And n is a whole number, then we can conclude that the maximum number of rotten apples can be 214.

8 0
3 years ago
The perimeter of a square is 44. Find the length of a diagonal.
julsineya [31]
If the perimeter is 44 the the diagonal is 22
7 0
3 years ago
Read 2 more answers
A dress is marked up 16 2/3 to a final price of 140. what is the original price
rewona [7]
163.38

hope this helped!!
will u plz give me brainliest?
6 0
3 years ago
Other questions:
  • Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approxi
    10·2 answers
  • SAT verbal scores are normally
    5·1 answer
  • a bag contains 6 cherry, 3 orange, and 2 lemon candies. you reach in and take 3 pieces of candy at random. find the probability
    9·2 answers
  • Please help me with this question :) thanks.
    10·1 answer
  • the number is service upgrade sold by each of 30 employees is as follows :32,621,10,8,11,12,36,17,16,15,18,40,24,21,23,24,24,29,
    9·1 answer
  • Suppose the number of leaves z on a tree varies directly with the height of the tree y in yards and directly with the cube of th
    14·1 answer
  • The data on the right represent the number of traffic fatalities by seat location and gender. consider a victim randomly selecte
    6·1 answer
  • Ne of the fastest recorded speeds of an alligator on land is 8.8 m/s. Approximately, what is this speed in kilometers per hour?
    5·1 answer
  • Who ever makes it good I'll pay$ through PayPal I just need help by the end of today
    14·1 answer
  • Pls help. <br><br><br><br>Pls quick......​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!