Questions on Word Problems: Linear Equations And Systems Word Problems answered by real tutors!

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Question 235318: Hello, I was helping my aunt with some of the problems she had with inequalities before i stumbled upon this. Its been years since I last took algebra, so please help me out with this.
1. In 2002, a one year old Acura was worth $18,249, with a depreciation of $1903 per year. A year old Subaru sedan was worth about $14,564 with a depreciation of $1225 per year.
(a) Let V be the value in $ of the Acura at t years since 2002, find an equation of a model to describe the data.
(b) Let V be the value in $ of the Subaru car at t years since 2002, find an equation of a model to describe the data.
(c) Use substitution or elimination to predict when the two cars will have the same value. What is that value.
Thanks.
Click here to see answer by scott8148(3382)

Question 235909: Celsius to Fahrenheit. Water freezes at 0 degrees C or 32 degrees F and boils at 100 degrees C or 212 degrees F. There is a linear equation that expresses the number of degrees Fahrenheit (F) in terms of the number of degrees Celsius (C). Find the equation and find the Fahrenheit temperature when the Celsius temperature is 45 degrees.
Click here to see answer by rfer(2688)

Question 235911: Velocity of a bullet. A gun is fired straight upward. The bullet leaves the gun at 100 feet per second (time t 0). After 2 seconds the velocity of the bullet is 36 feet per second. There is a linear equation that gives the velocity v in terms of the time t. Find the equation and find the velocity after 3 seconds.
Click here to see answer by ankor@dixie-net.com(6692)

Question 235974: A number doubled and increased by five is less than or equal to ten times the same number."
Click here to see answer by xmoo22xx(3)

Question 236093: Write the following as expressions (use 'x' for the unknown)-Half the product of five and a number
Also I was wondering if you could tell me if I did this one correctly-Half a number added to seven x/2+7
Click here to see answer by nyc_function(260)

Question 236322: how do you convert 4 1/8 pounds to ounces.
Click here to see answer by Theo(674)

Question 236352: when four times the number is added to 7 times, the result is 55 what is the number
Click here to see answer by JimboP1977(76)

Question 236351: when four times the number is added to 7 times, the result is 55 what is the number
Click here to see answer by checkley77(7035)

Question 236481: Soybean meal is 16% protein; cornmeal is 8% protein. How many pounds of each should be mixed together in order to get 320lb mixture that is 10% protein?
Click here to see answer by checkley77(7035)

Question 236525: repair cost exceeds 80% of a car's value, but the car sustains $12000.00 worth of damages. What is the car's value?
Click here to see answer by checkley77(7035)

Question 236826: our math class has collected $10.25 in nickels and dimes for a class breakfast. If there is a total of 15 coins how many coins of each kind are there?
Click here to see answer by checkley77(7035)

Question 237015: An express train and a local train leave Grays Lake at 3:00 P.M. and head for Chicago 50 miles away. The express travels twice as fast as the local and arrivies 1 hour ahead of the local. Find the speed of each train algebraically and show work. I believe the speed of the trains is 40 and 20 miles per hour respectivelly.. I'm having trouble formulating the equations
Thanks
Click here to see answer by stanbon(26259)

Question 237364: a manufacturer produces three products, A, B, and C. The products are made in two different departments. Department I and II.
Find the number of units of A, B, and C which could be made if department I has 75 hours available and department II has 65 hours available. It is necessary that all of the available hours are used.
Click here to see answer by ankor@dixie-net.com(6692)

Question 237437: There are two plans for joining the steve math club. In the first you pay $250 for an annual membership and $8 per meeting. In the second plan you just pay $13 per meeting. After how many meetings are the plans the same cost? Set up an algebraic equation and solve.
Click here to see answer by stanbon(26259)

Question 237485: How would I write the equation for:
Bill has $11.55 in dimes and quarters. He has 8 times as many dimes as quarters. How many dimes does he have?
Click here to see answer by stanbon(26259)

Question 237612: If greeting cards cost $2.50 for a box 12., $1.25 for a packet of three, or 50 cents each, then the greatest number of cards that can be purchased for $17.25 is
A. 73 B. 72 C. 77 D. 78 E. none of these
Click here to see answer by College Student(208)

Question 237587: A site licensing fee for a computer program is $1500. Paying this fee allows the company to use the program at any computer terminal within the company. Alternatively, the company can choose to pay $200 for each individual computer it has. How many individual computers must a company have for the site license to be more economical for the company?
These are word problems for Inequalities
Click here to see answer by Theo(674)

Question 238368: How do I solve this question?
If 2k + 3y = k and 4x =7y, which of the following represents the value of y in terms of k?
Click here to see answer by stanbon(26259)

Question 238683: Find the slope and the y-intercept
f(x)= -9-8
what is the slope?
what is the y-intercept?
Click here to see answer by solver91311(5072)

Question 238683: Find the slope and the y-intercept
f(x)= -9-8
what is the slope?
what is the y-intercept?
Click here to see answer by Alan3354(6059)

Question 238733: The car costs $12590 and is 20% off. What was the original price?
answer $15737.50
no comprendo. please explain!
Click here to see answer by JimboP1977(76)

Question 238711: In college there are 15 times as many students as professors. if together the students and professors number 40,000, how students are there in college?
Click here to see answer by College Student(208)

Question 238682:
Amy paid $63.36 for a pair of running shoes during a 15% off sale. What was the regular price?
Train A and B are traveling in the same direction on parallel tracks. Tran A is traveling at 100 miles per hour and train B is traveling at 125 miles per hour. Train A passes a station at 1:25p.m If train B passes the same station at 1:37p.m., at what time will train B catch up to train A?
Click here to see answer by checkley77(7035)

Question 238780: A small publishing company has a one time product cost for editing and printing of 56,430.00. Variable cost per book is $8.25. Publishe is selling the book to the store for $21.75. How many books must the publisher print and sell so that the production cost will equal the money obtained from sells.
Click here to see answer by stanbon(26259)

Question 238782: The surface area "S" of a right prism is given by s=2b+ph where "b" is the area of the base. P is the perimeter of base and "h" is the height of the prism. Solve for P
Click here to see answer by stanbon(26259)

Question 238824: Soybean meal is 12% protien; cornmeal is 6% protein. How many pounds of each should be mixed together in order to get 240 lb mixture that is 10% protein
How many pounds of the cornmeal should be in the mixture?____lb
How many pounds of the soybean meal should be in the mixture?____lb
Click here to see answer by stanbon(26259)

Question 239287: One number is five times another number. Their sum is twelve more than the smaller number. Find the two numbers.
Click here to see answer by stanbon(26259)

Question 239288: Find the equation through the point (2,4) with slope 4
Click here to see answer by anantha(74)

Question 240475: Please help me write out and solve this equation:
At the Shake Shack two orders of fries and four shakes costs $5.90. How much is an order of fries.
Click here to see answer by scott8148(3382)

Question 240474: Please help me write out and solve this equation:
A store owener sells two pairs of running shoes for each pair of high tops. He plans to order 144 pairs of shoes. How many pairs should be high tops?
Click here to see answer by unlockmath(108)

Question 240624: Amy is making chocolate tea bread and a special oatmeal bread to sell at a bake sale. A batch of chocolate tea bread requires 2 eggs and 2 cups of flour. The oatmeal bread requies 3 cups of flour and 1 egg. Amy has 12 cups of flour and 8 eggs on hand. She makes a profit of $2 on both kinds of bread. Write a set of constraints that cold be used to graph the feasible region.
Click here to see answer by solver91311(5072)

Question 240603: In three years, Lacey will be twice as old as Jennifer will be. At presemt, twice Lacey's age is the same as the product of Rachel's and Jennifer's ages. If Rachel is now twice as old as Jennifer, find the ages of all three girls.
I started out with let L be Lacey's age, J be Jennifer's age and R be Rachel's age. The first equation I came up with was (L+3)=2(J+3). The second was 2L=RJ. The 3rd was R=2J...
Click here to see answer by ankor@dixie-net.com(6692)

Question 241021: what is the minimum product of two numbers that differ by 7? what are the numbers?
Click here to see answer by checkley77(7035)

Question 240358: Translate into an equation:
f varies directly as the square of b
Click here to see answer by College Student(208)

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