posted by .

In the following, write an expression in terms of the
given variables that represents the indicated quantity:
a. The cost of having a plumber spend h hr at your
house if the plumber charges $30 for coming to the
house and $x per hour for labor
b. The amount of money in cents in a jar containing
some nickels and d dimes and some quarters if there
are 4 times as many nickels as dimes and twice as many
quarters as nickels
c. The sum of three consecutive integers if the greatest
integer is x

  • math -

    cost: 30 + x*h

    money: 10d + 5*4d + 25(2*4d)) = 230d

    sum: x-2 + x-1 + x = 3x-3

  • math -

    a. Cost = $30.00 + h x $x
    $30 initial fee plus number of hours times the cost per hour.

    b. The value of the dimes can be written as $0.10 x d (the number of dimes). The number of nickels can be written as 4 times the number of dimes (4d) but the value is written as $0.05 x 4d. The number of quarters is twice the number of nickels which is four times the number of dimes. So, the number of quarters is (8d). The value of the quarters is $0.25 x 8d.
    The equation would be: ($0.10 x d) + ($0.05 x 4d) + ($0.25 x 8d)=$_____. You could, then factor out the d (number of dimes), multiply the values($0.10, $0.05 and $0.25) times their respective quantity multiplier (1, 2, 4). This gives you the amount = $2.30 x d (for every one dime, you have enough dimes, nickels, and quarters to equal $2.30, so count the dimes and multiply by $2.30.

    c. Sum = x + (x-1) + (x-2)= 3x-3

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Geometry

    A plumber knows that if you shut off the water at the main valve, it is safe to remove the sink faucet. The plumber turns the main valve to the “Off” position. What conclusion can the plumber make?
  2. Pre Calc

    A plumber charges $40 per hour for labor with a minimum labor charge of $30. For example, if she does her repairs in only 0.2 hours, then $40*0.2=$8, which is less than the minimum, so she would charge $30 for labor. We will assume …
  3. math

    A plumber charges a flat $50 for a home service call plus $10 per 15 minutes of labour. Write an equation for calculating the total charges, C, in terms of the hours of labour, H. If you were to plot a graph of C vs. H, what would …

    A plumber, electrician and painter were all hired to work on 3 different house. For Adam's house, a plumber worked a total of 35 hours, an electrician worked 42 hours and a painter needed 29 hrs to complete the job. the total cost …
  5. algerbra

    A plumber charges customers $48 for each hour worked plus an additional $9 for travel. If h represents the number of hours worked, which of the following expressions could be used to calculate the plumber's total charge in dollars?
  6. math

    The cost C in dollars of having an electrician come to your house to do a repair job in h hours if he charges $16 for coming to the house and $30 for each hour.
  7. Algebra

    Two plumbers received a job. At first, one of the plumbers worked alone for 1 hour, and then they worked together for the next 4 hours. After this 40% of the job was finished. How long would it take each plumber to do the whole job …
  8. math

    a plumber charges $25 for service call plus $50 per hour what is the cost 8 hours?
  9. algebra

    Plumber chargers $60 an hour. Plumber B chargers $40 to visit your home plus $55 for each hour. for hop many hours will the total cost for each plumber be the same?
  10. Math

    1. Which ordered pair is a solution of the equation y = −11x + 4?

More Similar Questions