# Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!

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 Algebra: Functions, Domain, NOT graphing Solvers Lessons Answers archive Quiz In Depth

 Question 7091: What is Function notation? what is it used for? Click here to see answer by prince_abubu(198)

 Question 7092: Determine whether each relation is a funtion, justify your answer. {(0,1), (1,0), (2,1), (3,1), (4,2)} HOw do i solve this problem? Click here to see answer by glabow(165)
 Question 7092: Determine whether each relation is a funtion, justify your answer. {(0,1), (1,0), (2,1), (3,1), (4,2)} HOw do i solve this problem? Click here to see answer by drglass(89)

 Question 7139: The Ajax Company can sell gidgets for \$10.97 a piece. What does it cost the company to manufacture each gidget if it makes a profit of 8%. The answer that my book has, I am not getting. I tried doing a proportion Yet, that is not the answer I multiplied \$10.97 x 8% and I still subtract that from \$10.97 and I did not get the answer. Please help me. I am frustrated. Click here to see answer by prince_abubu(198)

 Question 7140: A store advertises an air conditioner on sale for \$280. If this is marked down 20%, what was the original price. Again I tried to use a proportion or multiply 20% x 280 and I do not get the answer in my book. Please help me. Click here to see answer by Earlsdon(6287)
 Question 7140: A store advertises an air conditioner on sale for \$280. If this is marked down 20%, what was the original price. Again I tried to use a proportion or multiply 20% x 280 and I do not get the answer in my book. Please help me. Click here to see answer by glabow(165)

 Question 7134: Hello, My question is about relations and functions. On my homework, it says, "For each set of points, identify the domain, the range, and tell whether it is a function or not." One of the problems is {(2,3),(3,7),(5,-1),(0,0)}. How do i know whether it is a function or not? Many thanks, Sarah Please email me at sayray4209@yahoo.com Click here to see answer by glabow(165)

 Question 7278: the sum of two numbers is 4, and their difference is 24. find the numbers. Click here to see answer by bonster(299)

 Question 7696: can you factor x squared - x - 20 ? Thank you. Amanda Click here to see answer by drglass(89)

 Question 7841: How do you solve functions? for exampl:f(x)=3x+2 and f(x)=x/x-1 Click here to see answer by prince_abubu(198)

 Question 8040: 2.8 x 10 to the 23rd(power) is what percent of 5.6 x 10 to the 24th(power)? this is my daughters first day of algebra. Last year her National test scores came back high so they put her is the class. She never had pre-algebra and she doesn't have a text book yet. What is the formula? Please help.... Click here to see answer by bonster(299)

 Question 8520: The worksheet says: Use substitution to solve each system of equations. If the system does not have exactly one solution, state whether it has no solution or infinitely many solutions. The problem: 3x-y=4 2x-3y=-9 Click here to see answer by prince_abubu(198)

 Question 8640: I'm sorry. I left out the 7. 2/x + 1/2x = 7 ? Click here to see answer by rapaljer(4667)

 Question 9106: my problem is g(x)=sq. rt. of x -1. i have four numbers for x and they are 0,1,4,9. i dont know how to solve because of the square root. i can do these kinds of problems without square roots, but that is really throwing me off. so just explain what to do with that and i can finish it. thanks Click here to see answer by longjonsilver(2297)

 Question 9152: Identify all rational zeros of the polynomial function f(x)= x^3+4x^2-2x-15 Click here to see answer by mathmaven53(29)

 Question 9261: I AM TRYING TO HELP MY DAUGHTER ON HER MATH. IS THERE ANYTHING I CAN GET OFF OF HERE TO SHOW EXAMPLE FOR HER? THANK YOU Click here to see answer by rapaljer(4667)

 Question 9338: what is the domain and range of this relation: (1,2)(3,10)(-2,20)(3,11) Click here to see answer by rapaljer(4667)

 Question 9310: I don't understand these problems. How do you solve this? f(x)=10x+1 Click here to see answer by rapaljer(4667)

 Question 9396: I WANT TO KNOW IF YOU HAVE PRACTICE QUIZZES FOR MATH 1000 ON LINE AND PRACTICE EXAMS ONLINE THAT WILL HELP ME FOR MY EXAM AND A COMPREHENSIVE ONE OF ALL THE EXAMS LIKE A CUMALITIVE FINAL AND MIDTERM Click here to see answer by rapaljer(4667)

 Question 9296: tell if the interval is open,closed,or neither 9>s>-7 Click here to see answer by rapaljer(4667)

 Question 9535: I was wondering how to find all zeros of the function.... h(x)=x^3-3x^2+4x-2....I could only get x=1 f(x)=x^4-10x^2+24......I got x=-2 but i can't get the other answers THANKS SO MUCH!!! Click here to see answer by mathmaven53(29)

 Question 9707: how do u do this problem y=2x+5 u have to make a input output box and i dont know how to do it. i have to get this done tonight can u please please show me? Click here to see answer by jennifer(9)

 Question 9706: I do not understand how to do any of this. can u try and teach me or at least show me? Click here to see answer by jennifer(9)

 Question 9870: Describe the domain and range of the function. Input 0 2 4 6 8 10 Output 7 10 12 15 17 21 Click here to see answer by rapaljer(4667)