A plumber charges $50 to come to a house and $20 an hour for work time. If h represents the number of hours worked, which expression gives the total amount the plumber charges?

Question

imstuck · Answer

You know right off that no matter how much time the plumber spends working on your toilet, he is going to charge $50 for the visit.  That $50 is non-negotiable.  1 hours' labor or 100 hours' labor, he is making $50 for walking in your door.  What makes him his money is the number of hours he actually spends working on your toilet, because he charges $20 per hour.  So the number of hours he works on your toilet times $20 per hour is added to his $50 non-negotiable fee to give us an expression of
50 + 20h

imstuck · Answer

or
20h + 50 works too, of course.

anonymous · Answer

thx

anonymous · Answer

your asome

anonymous · Answer

can you help anser this 
Which phrase could be represented by this expression? 

(z-7)
-----
   4

imstuck · Answer

what are the phrases, assuming they gave you some.

anonymous · Answer

A. 
  seven less than one-fourth of a number   
   

 
 

  

  B. 
  four times the difference of a number and seven   
   

 
 

  

  C. 
  one-fourth the difference of a number and seven   
   

 
 

  

  D. 
  seven less than four times a number

imstuck · Answer

Without anything to go on, I would say "the quantity 7 less than z divided by 4"

anonymous · Answer

those are the opens

imstuck · Answer

c

anonymous · Answer

thx you are the best helper

anonymous · Answer

Sharon is the youngest in her family. Her sister Anne is 3 years older than she is. Her brother Tom is 5 years older than Anne. The sum of their ages is 62. 

 

How old is Sharon?

anonymous · Answer

as you can tell im bad at math

imstuck · Answer

working on it,,,just give me a sec.

anonymous · Answer

and my mom is a sleep so she cant help that is why im do this

anonymous · Answer

and how do you change your piter

imstuck · Answer

That's ok...no need for an explanation!  We will call Sharon's age x.  If Anne is 3 years older than Sharon, then Anne's age is x + 3.  If Tom is 5 years older than Anne, his age is 5 + (x + 3).  They all add up to equal 62.  So let's do that...add them all together and set them equal to 62.

imstuck · Answer

x + (x + 3) + [5 + (x + 3)] = 62 which simplifies beautifully down to
x + x + 3 + 5 + x + 3 = 62 and even further to
3x + 11 = 62.
Solving for 3x we get 3x = 62 - 11 or
3x = 51
Solving for x we get x = 17.
Sharon is 17, Anne is 20, and Tom is 25

imstuck · Answer

You can change your picture by going up to the upper right hand of the page and clicking "Settings".  That should allow you to change your profile pic.