# Questions on Algebra: Rational Functions, analyzing and graphing answered by real tutors!

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 Algebra: Rational Functions, analyzing and graphing Solvers Lessons Answers archive Quiz In Depth

 Question 315800: 9 5x+7 Find all numbers for which the rational expression is underfined. Click here to see answer by jim_thompson5910(28595)

 Question 315903: Find the point of intersection of the two lines: 3x-4y=2 -2x+y=1 Thanks in advance Click here to see answer by nerdybill(6962)

 Question 316525: to solve the system by the method of choice 2x-7y=1 -5x+8y=-2 what method would i use Click here to see answer by Fombitz(13828)

 Question 316524: -3x+2y=7 x=16-3y the answer i came up with is y=5,and x=1 is this right Click here to see answer by Fombitz(13828)

 Question 316523: y-4x=-1 5y-5x=0 how do i solve this system? Click here to see answer by Fombitz(13828)

 Question 316562: the college bookstore sells two types of graphing calculators. One calculator sells for \$79 and the other for \$46. iF THE BOOKSTORE SOLD 24 calculators for a total of \$1302.00 how many of each were sold. Click here to see answer by josmiceli(9695)

 Question 316564: Gordon has 94 feet of fencing to enclose a rectangular garden. If the garden's width is to be 4 feet less than twice its length, find the length and width. Click here to see answer by texttutoring(324)

 Question 316606: solve the system of inequalities y greater -3x 4y+2x less than are equal -2 Im not sure how to solve or graph this Click here to see answer by texttutoring(324)

 Question 316883: Please Help!!!!Could someone help me with this problem? I am confused? Bayside Insurance offers two health plans. Under Plan A, Sam would have to pay the first \$80 of his medical bills, plus 35% of the rest. Under Plan B, Sam would pay the first \$230, but only 20% of the rest. For what amount of medical bills will Plan B save Sam money? Assume he was over \$230 in bills. Sam would save with Plan B if he had more than \$_____ in bills. Click here to see answer by Theo(3464)

 Question 316882: I neeed help graphing f(x)=x^2-7x-8 I need to understand how to find the vertex, x-intercept,line of symmetry, and the opening of the graph. Click here to see answer by texttutoring(324)

 Question 317212: w=Cr^-2 a. Solve the equation for r. b. Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation true. (Sea level is 3,963 miles from the center of the Earth.) 100=3963r^-2 I am not sure if I am setting this problem up correctly? Can you let me know and give me some guidance as to what step to take first in solving? Click here to see answer by Fombitz(13828)

 Question 317515: I am being asked to rationalize the denominator. (sqrt(6) + sqrt(5)) / (sqrt(6) - sqrt(5)) Can you help me with this? Jerry jerry@san.rr.com Click here to see answer by Fombitz(13828)

 Question 317692: Which of the following is a simplified expression equal to 9-X^2/X-3 for all x < –3 ? A. 3x B. x + 3 C. x – 3 D. –x + 3 E. –x – 3 Click here to see answer by mananth(12270)

 Question 317727: Let P=(x,y)be a point on the graph of y=x2-4, use a graphing utility to graph d=d(x) in order to answer the following question. For what positive value of x is d smallest? Click here to see answer by Earlsdon(6287)

 Question 317738: I don't know where this question belongs but I really need help solving it and please show show work: Subtract: x+7/x^2+x-56 - x+8/x^2-49 Click here to see answer by checkley77(12569)

 Question 317794: What is the value of the expression 2x^2y / 4xy when x = 2 and y = 1? a) 1 b) 2 c) 4 d) 3 Click here to see answer by jim_thompson5910(28595)

 Question 317798: What is the value of the expression x^2 + 5x + 1 / y^2 - 4 when x = 1 and y = 3? a) 1 2/5 b) 2/5 c) 2 d) 1 Click here to see answer by stanbon(57377)

 Question 317797: What is the non-perimssible vaule for the rational expression y + 5 / x - 3? a) y = 0 b) y = 3 c) x = 0 d) x= 3 Click here to see answer by stanbon(57377)

 Question 317795: What is the value of the expression when x = 4 and y = 2? a)60/3 b) 8/1 c) 80/9 d) 16/5 Click here to see answer by itiffydn(3)

 Question 318069: Im am trying to solve for the square root of x^2-14x+49. It has the square root sign over it. Do i need to simplify and then set to zero. x+7 and x-7.. Click here to see answer by jim_thompson5910(28595)

 Question 318070: I need to know if this turns into an absolute value. (sqr5mn)^7 would the answer be 5mn absolute Click here to see answer by Alan3354(30993)