Tutors Answer Your Questions about Inequalities (FREE)
Question 235461: Please I need help with this problem:
1. The number of publishers in the usa has increased approximately linearly from 40,964 in 1993 to 73,200 publishers in 2003. Let n be the number of publishers at t years since 1990
(a) find an equation of a linear model to describe the data. (b) what is the slope? what does it mean in this situation? (c) what is the n intercept? what does it mean in this situation?
Click here to see answer by stanbon(57967) |
Question 235618: I don't understand how to write an inequality from a word problem. If that doesn't make sense, my problem is that I don't know how to take an equation from a word problem. The problem is "In a school zone, cars can go no more than 20 mi/h." I think I'm supposed to put x>=20, x meaning cars. That is suppose to mean cars can go less than or equal to twenty. Also I know the > Should have a line under it to show equal to, but I'm not sure how to show that on a computer.
Click here to see answer by Theo(3504)  |
Question 236499: Your departmetn sends its copying to the photocopy service down the street. The service bills your department $0.08 per page. Your department is considering purchasing a copier for $1750. The expense per page with the copier would be $0.03. If the expected life of the copier is 6 years, how many copies must the department make in the 4-year period in order for purchasing the copier to be more economical than using the photocopy service?
a. Write an inequality to describe the situation
b. Solve the inequality
Click here to see answer by rfer(12730) |
Question 237344: A health official recommends a maximum cholesterol level of 200 units. By how many units must a patient with a cholesterol level of 275 units reduce her cholesterol level to satisfy the recommended maximum level???????
Click here to see answer by rapaljer(4667)  |
Question 238267: Ok, so I asked this question before but I need to know how you graph this.
Tell whether the given number is a solution of
5x–10>2x+4.
The numbers are
8, 5, 4, –2
How to graph this, please try the best you can, I'm really confused!!!
Click here to see answer by checkley77(12569) |
Question 238835: Solve: 6x+2>7x-5
Im confused about how this answer is solved, my instructor is not available At the moment the multiple choice answers are A) {x|x<-3} B) {x|x<7} C) {x|x>-3} D){x|x>7} im not sure what this | bar means i think x is 7 but i may be wrong.
Click here to see answer by checkley77(12569) |
Question 237874: how do i solve this word problem (its really confusing)?
you take more than $8.25 but less than $10 to the amusement park. You ride the slide 15 times and decide that you need a soda. If the soda is $2,do you have enough money left over to buy the soda?
The key for this is as follows: The wetter than wet waterpark charges $0.75 to rent a mat plus $0.50 each time you ride the big water slide.
I have figured out that the equation is y=0.75+0.50x
Click here to see answer by College Student(505)  |
Question 239559: Ernest works in the shipping department loading shipping crates with boxes. each empty crate weighs 150 lb. how many boxes, each weighing 35 lb, can ernest put in the crate if the total weight is to be no more than 850 lb?
write an ineuality
Click here to see answer by checkley77(12569) |
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