# 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 627725: if the domain of "f" is all real numbers in the interval [0,8] and the domain of "g" is all real numbers in the interval [-3,4], the doman of "f+g" is all real numbers in the interval_____? Click here to see answer by reviewermath(507)

 Question 627113: Let f(x)= ax+b, where a and b are positive numbers, and assume that the following equation holds for all values of x: f(f(x))= bx+a. Find a+b. Click here to see answer by richard1234(5390)

 Question 627990: is the general form of the constant function f(x)=a(x^0),where a is constant? Click here to see answer by jim_thompson5910(28536)

 Question 628024: I can not seem to grasp how to find the answers for problems like this: Multiply and simplify by factoring. I think what I am having the problem understanding is the "perfect square" factors. √12* √150 Thanks for all your help. Click here to see answer by jim_thompson5910(28536)
 Question 628024: I can not seem to grasp how to find the answers for problems like this: Multiply and simplify by factoring. I think what I am having the problem understanding is the "perfect square" factors. √12* √150 Thanks for all your help. Click here to see answer by ankor@dixie-net.com(15645)

 Question 628028: If 10 is in the domain of f−1, find f [f−1(10)]. f[f−1(10)] = Click here to see answer by solver91311(16872)

 Question 628027: Assume that the given function has an inverse. Given f(3) = 2, find f^−1(2). f^1(2) = ? Click here to see answer by stanbon(57282)

 Question 628172: How can I find the range of x/(x+2)? Click here to see answer by solver91311(16872)

 Question 628285: can you help me evaluate the following problem f(x)=2x-5 and g(x)= x^2+3x+4 f(2) - g(3) Click here to see answer by reviewermath(507)

 Question 628284: can you help me evaluate the following problem g(X)= x^2 + 3x + 4 g(-1) Click here to see answer by reviewermath(507)

 Question 628300: can you help me evaulate this function for the function f(x)= -1/2x + 6,find the value of x for which f(x)=x Click here to see answer by reviewermath(507)

 Question 628429: Find f(x) and g(x) so that the function can be described as y = f(g(x) y = (9)/(x^2) + 2 Click here to see answer by Tatiana_Stebko(1326)

 Question 628649: Area of the region of a circle that is divided in 1/2 noted as 4 inches the answer needs to be the area = ? inches ^2 Click here to see answer by Alan3354(30993)

 Question 628953: the general form of the constant function is : f(x)=a(x^0), where a is constant. So when the function passes by any point on the y-axis, the function will be :f(x)=a(0^0). This means there must be a hole in the point of intersection of the y-axis and the constant function on the graph because (0^0) is undefined. So why don't we draw the hole on the Cartesian coordinate plane ? Click here to see answer by stanbon(57282)

 Question 628993: find the function and determine the domain and range: y = 3x – 4 im so stuck on this? i need help. and steps please Click here to see answer by reviewermath(507)

 Question 629043: Find the domain y=√60x-25x^2-36 Please note that the square root sign cover not just 60x but 60x-25^2-36. y=√5x^2+6x+1+1/3x+5 Please note again that the square root sign cover 5x^2+6x+1. Click here to see answer by solver91311(16872)

 Question 629778: find dy/dx for Square root of x + the square root of y = 9. at (16,25) Click here to see answer by reviewermath(507)

 Question 629793: find dy/dx for x^2y - xy^2 = -6 at (2,-1) Click here to see answer by solver91311(16872)

 Question 629730: What is the inverse of ((1,7) (3,4) (5,6) (-1,4)) Click here to see answer by jsmallt9(3296)

 Question 629920: 5. Determine the point-slope form of the linear function f(x) that has the following properties: f(1) = 0 f(0) = 1 Click here to see answer by ewatrrr(10682)

 Question 629919: 4. Find the formula for the linear function that passes through the point P = ( -4, -1 ) and is perpendicular to the linear function g(x) which has the properties: g(2) = 9 g(-1) = -1 Click here to see answer by ewatrrr(10682)

 Question 629968: I've been trying to do this problem for a while. 2. The Iron Range Steel Company determines that a monthly production level of 10,000 tons of steel allows for a sell price of \$206/ton. Doubling production results in a price drop to \$166/ton. Find the price y in terms of the number x of tons of steel produced and sold. Assume that the graph of y to x is linear. How much steel must Iron Range produce if the sell price is set at \$190/ton? 3. Find the revenue function R = xy for the Iron Range Steel Company in problem 3. Write R in the form: R = ax2 + bx + c. A. Find the vertex. B. What is the maximum revenue? C. How many tons of steel should be produced and sold in order to obtain maximum revenue? D. What price should be charged/ton to guarantee that the company earns maximum revenue? I found the slope of the line to be -.004 by using 206-166 over -10000 making the linear equation y=-.004x+40 However when i get to trying to find how much steel in terms of 190 per ton im lost. also i am not sure what to do with #3 in terms of writting it in Click here to see answer by stanbon(57282)

 Question 629996: Hello I am working on even, odd, or neither functions. I have been doing great on most of them until I hit one that i really do not get. My question: is log(x^2/y) even, odd, or neither? i know that when log(x/y) it is the same as logx-logy. I tried separating it like that, and then changing the sign. so my problem was like : log(x^2/y)= logx^2-logy f(x)=logx^2-logy f(-x)=-logx^2+logy this function is odd. I do not know if i am doing it right, I would just want to know how to do it. Thanks Click here to see answer by jsmallt9(3296)

 Question 629914: two function f and g are defined by : f(x)=2x+1 g(x)=x^2 verify that (fog)^-1 = g^-1 o f^-1 Click here to see answer by jsmallt9(3296)

 Question 629913: find inverse for each of the following function.. x-1/x + 2 Click here to see answer by jsmallt9(3296)

 Question 629912: find inverse for each of the following function.. 3/x minus 2 Click here to see answer by jsmallt9(3296)