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
melisa1 [442]
3 years ago
13

Suzy is starting a babysitting buisness. She spent $ 36 to make signs to advertise. She charges and intial fee of $ 6 and then $

3 for each hour of service. Write and solve an inequality to find the number of hours she will have to babysit to make a profit.
Mathematics
1 answer:
timofeeve [1]3 years ago
3 0

Answer:

3h - 30 > 0

h > 10

Step-by-step explanation:

To make a profit, subtract $36 in cost from the income coming in.

She charges $6 and then $3 per hour or 3h. Her income coming in is 6 + 3h.

Subtract 36 from it to find the profit.

3h + 6 - 36

3h - 30

To make a profit, she needs to make more than $0 or > 0.

3h - 30 > 0

Solve using inverse operations.

3h - 30 > 0

3h > 30

h > 10

You might be interested in
Which of the following are solution to the inequality below -4w - 2 < -38
FromTheMoon [43]

Answer:

w > 9

Step-by-step explanation:

Solve the inequality by using inverse operations.

-4w - 2 < -38

-4w < -36

w > 9

Like solving equations, inequalities should be solved using inverse operations. However, unlike equations, when you divide or multiply by a negative the sign changes.

8 0
3 years ago
If a lap is 440 yard how many laps would need to be completed to run a mile
Nataly_w [17]
1760 yards = 1 mile

Therefore we divide 1760 / 440 = 4 laps to run to complete a mile.
4 0
3 years ago
Read 2 more answers
Joe manages a local drug store. His base salary is $300 per week plus 1.8% of the weekly sales at the store. What must the weekl
Montano1993 [528]
Let x be the total weekly sales.

His salary is $300/week + 1.8% (x), if he wants to earn $570, then:

300 + 1.8%(x) = 570
1.8%(x) = 270
0.018 (x) = 270

and x = 270/0.018 = $15,000

5 0
3 years ago
what is an arithmetical multiplier for converting quantity expressed in one set of units into an equivalent expressed in another
Levart [38]
It is a conversion factor.

For example to convert from eett to inches you  multiply by 12 in/ft, which is the conversion factor.
7 0
3 years ago
A study was conducted to determine if the salaries of librarians from two neighboring cities were equal. A sample of 15 libraria
AURORKA [14]

Answer:

Step-by-step explanation:

The formula for determining the confidence interval for the difference of two population means is expressed as

Confidence interval = (x1 - x2) ± z√(s²/n1 + s2²/n2)

Where

x1 = sample mean salary of city 1 librarians

x2 = sample mean salary of city 2 librarians

s1 = sample standard deviation for city 1

s2 = sample standard deviation for city 2

n1 = number of soles for city 1

n1 = number of soles for city 2

For a 95% confidence interval, we would determine the z score from the t distribution table because the number of samples are small

Degree of freedom =

(n1 - 1) + (n2 - 1) = (15 - 1) + (15 - 1) = 28

z = 2.048

x1 - x2 = 28,900 - 30,300 = - 1400

Margin of error = 2.048√(s1²/n1 + s2²/n2) = 2.036√(2300²/15 + 2100²/15)

= 1647

The upper boundary for the confidence interval is

- 1400 + 1647 = 247

The lower boundary for the confidence interval is

- 1400 - 1647 = - 3047

6 0
3 years ago
Other questions:
  • Given a mortgage of $48,000 for 15 years with a rate of 11%, what are the total finance charges?
    12·2 answers
  • Use completing the
    12·1 answer
  • For a-d, choose Yes or No to tell whether each of the following sets of side lengths will make a shelf that fits in a 90 degree
    9·1 answer
  • 2.34 x 10^65   + 9.2 x10^66  
    8·1 answer
  • Emergency!!! In the figure, 1 = 2, 3= 4, and TK = TL. You can justify the conclusion that TKS = TLR by the
    5·1 answer
  • Which value is included in the solution set for the inequality graphed on the number line? –5 –2 0 3
    11·2 answers
  • Write an equation for a function that has vertical asymptotes at x=3 &amp; x=-10
    13·1 answer
  • Convert the angle - 3 radians to degrees, rounding to the nearest 10th.
    13·1 answer
  • An angle measureless 60 degrees the measure of it complementary angle. What is the measure of each angle
    15·2 answers
  • What Ordered pairs would you proud to show the puppies weigh on a coordinate grid? How do you think the ordered pairs would be d
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!