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Tutors Answer Your Questions about Evaluation Word Problems (FREE)
Question 70361: The inventor of a new product believes that the cost of producing the product is given by the function: C(x)= 1.75x + 7000
The cost of 2000 units of her invention is $10,500.
If the inventor charges $4 per unit, then her profit for producing and selling x units is given by the function: P(x)= 2.25x - 7000
(a) What is her profit if she sells 2000 units?
(b) What is her profit if she sells 5000 units?
(c) What is the break-even point for sales?
Click here to see answer by funmath(2873)   |
Question 70361: The inventor of a new product believes that the cost of producing the product is given by the function: C(x)= 1.75x + 7000
The cost of 2000 units of her invention is $10,500.
If the inventor charges $4 per unit, then her profit for producing and selling x units is given by the function: P(x)= 2.25x - 7000
(a) What is her profit if she sells 2000 units?
(b) What is her profit if she sells 5000 units?
(c) What is the break-even point for sales?
Click here to see answer by bucky(1732) |
Question 71646: How do you write an equation for the following problems:
1. Kevin weighs 10 pounds more than Tim. The sum of their weight is 470 pounds. How much does Tim weigh?
2. Bryson's new computer costs $178.50 less than his old one. The sum of the costs of the two computers is $3,500. How much did his old computer cost?
3.Kelsey is 4 years older than Kierra. Five years ago the sum of their ages was 14. How old is Kelsey?
4. A rectangle has length three times its width. The perimeter of the rectangle is 56 inches. Find the length of the rectangle.
Click here to see answer by ptaylor(1578)  |
Question 72290: Science and medicine. Celsius temperature readings can be converted to
Fahrenheit readings using the formula F=9/5C+32. What is the Fahrenheit
temperature that corresponds to each of the following Celsius temperatures: -10, 0, 15, 100?
Click here to see answer by elima(1433) |
Question 72977: please student in confusion....an object is projected upward from the top of tower. its distance in feet above the ground after t seconds is given by s(t)=-16t^2+64t+80. how many seconds will it take to reach ground.
Click here to see answer by funmath(2873) |
Question 72777: A small company produces both standard and deluxe playhouses. The standard playhouses take 12 hours of labor to produce, and the deluxe playhouses take 20 hours. The labor available is limited to 800 hours per week, and the total production capacity is 50 items per week. Existing orders require the company to produce at least 10 standard playhouses and 15 deluxe playhouses per week. Write a system of inequalities representing this situation, where x is the number of standard playhouses and y is the number of deluxe playhouses. Then graph the system of inequalities.
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 73653This question is from textbook Prentice Hall Mathematics Pre-Algebra
: Hi guys, I am not doing well with helping my son on these word problems. Will you please assist me with the four question I have submitted below. Thanks!
Hello, I have a few word problem questions. Please help with...
This is question # 32 on page 17 of the text book.
1. A carnival charges $5 for admission plus $2 per ride.
a. Write an expression for the cost of admission plus r rides.
b. Find the cost of admission plus six rides.
c. How many rides can you afford if you have $15 to spend?
This is question # 16 on page 16 of the text book.
2. Online Purchasing - An online video store charges $24 for each DVD. Shipping costs $4 per order.
a. Write a variable expression for the cost of ordering DVDs.
b. Find the cost of ordering 3 DVDs.
This is question # 27 on page 16 of same text book.
3. Marine Biology - Write an expression for the number of kilometers a dolphin travels in d hours swimming at 8 km/h. Then find the number of kilometers the dolphin travels in 3 hours.
Finally, this is question # 31
4. A fitness club requires a $100 initiation fee and dues of $25 each month. Write an expression for the cost of membership for n months. Then find the cost of membership for one year. This question is from textbook Prentice Hall Mathematics Pre-Algebra
Click here to see answer by Earlsdon(4900) |
Question 75294: Authur has $1.70 in dimes and quarters. There are 3 more dimes than quarters, how many dimes and quaters does Authur have? Write an equation for this problem and solve it. My son is able to soleve the problem but he can't come up with a logical equation for the problem.
Click here to see answer by ptaylor(1578) |
Question 78642: Business and finance. A coffee merchant has coffee beans that sell for $9 per pound and $12 per pound. The two types are to be mixed to create 100lb of a mixture that will sell for $11.25 per pound. How much of each type of bean should be used in the mixture? Help, Help.
Click here to see answer by ankor@dixie-net.com(6693) |
Question 79611: Hi, not sure if i've chosen the correct topic or not, but any help would be appreciated. The problem reads:
If 342 cups of coffee can be made from 9 lbs of coffee, how many cups can be made from 6 lbs of coffee.
Thanks!
Click here to see answer by chitra(359) |
Question 79925: Hi, I need help in figuring out this problem. I can get some of it, I think I know how to get how many units in the case but not really sure.
The owner of a hobby store bought a case of 9-volt batteries for $26.00. He marked the price up such that his profit was $1.74 per battery. After selling 13 batteries, the store owner had recovered his cost. How many 9-volt batteries are in a case?
thanks for the help
Click here to see answer by bucky(1732) |
Question 82113: My directions are to solve the system by substitution. I don't know what I did wrong, but when I went to recheck my work I did not come up with the right answer could someone please re-work this problem and tell me what I did wrong.
3x+3y=9
y=2x-12
My work
3x+3(2x-12)=9 y=2(50
3x+6x-36=9 =10-12
9x/9=45/9 = -2
x=5
(5,-2)
To Check
5+ -2=7
7+ -2=9
Click here to see answer by stanbon(26297) |
Question 82848: three is the number of digits you see
their sum is between sixteen and twenty three
the number is also a multiple of four the first digit is more than five and prime
the last two digits have a some of two more than ten but the one digit is greater
what is the number
Click here to see answer by Edwin McCravy(2922) |
Question 85129: Sorry there is no ISBN of this textook.
"Will you solve this Word problem please"
1. A, B, and C can finish a job in 6 days. If B & C work together, the job will take 9 days; if A and C work together, the job will take 8 days. In how many days can each man working alone do the job?
2. A bicyclist and a hiker leave at the same place at the same time and travel in the same direction. The bicyclist travel three times as fast as the hiker. at the end of 3 hr they are 24 miles apart. how fast does the hiker travel.
3. A person travelling 4 hr by plane and 25 hr by ship covers 1580 miles. If the speed of the plane had been one-half of the actual speed and the speed of the ship had been one-fourth greater, the person would have travelled only 1315
miles in the same length of time. Find the speed of the plane and the ship.
Thank you so much.
Click here to see answer by ankor@dixie-net.com(6693) |
Question 87939: The following function describes the miles per gallon a ford Taurus gets when driven at x mls.per hour *NOTE: x is speed in mls.per hr. and f(x) is mls per gallon that the car gets when driven at x mls per hr.
f(x)=-0.018x^2+1.93x-25.34
a)how many miles per gallon will the car get at 45miles per hr.?
b)what is the speed of the car that gives you the maximum gas mileage?
c)what is the maximum miles per gallon that the car can get using this function?
Please help me, with this word problem. thanks!!
Click here to see answer by tutorcecilia(2042) |
Question 88286: HELP PLEASE!!!
Need to make both airplanes and helicopters
Can't make more than 50 airplanes and no more than 30 helicopters
Cost to make airplane - 60,000
Cost to make helicopter - 90,000
Budget to spend - 3.6 million
Need to find Max. profit if get 400,000 for each sirplane sold amd 850,000 for each helicopter sold???
Also - how many helicopters cam be made
HELP
NEED:
Constraints, object function, and solution
thanks so much
lucyloo
Click here to see answer by stanbon(26297) |
Question 88286: HELP PLEASE!!!
Need to make both airplanes and helicopters
Can't make more than 50 airplanes and no more than 30 helicopters
Cost to make airplane - 60,000
Cost to make helicopter - 90,000
Budget to spend - 3.6 million
Need to find Max. profit if get 400,000 for each sirplane sold amd 850,000 for each helicopter sold???
Also - how many helicopters cam be made
HELP
NEED:
Constraints, object function, and solution
thanks so much
lucyloo
Click here to see answer by Edwin McCravy(2922) |
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