# 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 343634: Please help me solve this equation: 42.73=-.03t+45.4. I know the answer is 89 but I cannot determine how to get 89. I tried 42.73 times .03+45.4 but that is not correct. I also tried to divide both sides by -.03 but again that does not work. Click here to see answer by scott8148(6628)

 Question 343882: What is the domain of this funtion, {(x,y): |x|=|y| and |y|≤ 2}? Click here to see answer by Jk22(389)

 Question 344145: Need help for Grade 11 functions question: The function f(x)has the property that f(2x+3)=2f(x)+3 for all x. If f(0)=6, what is the value of f(9)? Thank you so much! Click here to see answer by nyc_function(2733)

 Question 344340: find domain for y=x+5 if the range is (10,20,30,40) Click here to see answer by Fombitz(13828)

 Question 344103: solve for x if -4x < 12 and x + 4 > -5 Click here to see answer by Fombitz(13828)

 Question 344641: how do i write 8x+y-4=0 in function form? Click here to see answer by crbarnett8(3)

 Question 344645: Consider the function g(x)=x2+x-5. Evaluate g(x-2) = x2 = x to the 2nd power Click here to see answer by Fombitz(13828)

 Question 344623: The relationships in the tables below are functions. Write a function rule for each table. x y 1 20 2 16 3 12 4 8 Click here to see answer by Jk22(389)

 Question 344844: finding the difference quotient f(x+h)-f(x)/h g(x)=3sqrt of x I can set it up but i can't get the right answer 3 sqrt x+h - 3sqrt of x/ h Click here to see answer by stanbon(57307)
 Question 344844: finding the difference quotient f(x+h)-f(x)/h g(x)=3sqrt of x I can set it up but i can't get the right answer 3 sqrt x+h - 3sqrt of x/ h Click here to see answer by jsmallt9(3296)

 Question 344895: on a map,1 centimeter representsn80 kilometers.how many centimeters represent 280 kilometers Click here to see answer by stanbon(57307)

 Question 344897: Find the domain of the rational functions: f(x)=3x-8/4x+20 Click here to see answer by stanbon(57307)

 Question 344907: Perform the indicated operation. When no operation is indicated, simplify the rational expression completely. 10m^4/9a^2*3a^2b Click here to see answer by stanbon(57307)

 Question 344927: Solve the equation and check the solution if there is no solution say so 5/4x+2=1/x Click here to see answer by stanbon(57307)

 Question 344932: Solve the equation and check the solution if there is no solution say so 4-8x/x+1+8/x+1 Click here to see answer by stanbon(57307)

 Question 344942: Solve the equation and check the solution if there is no solution say so 4-8x/x+1=8/x+1 Click here to see answer by Fombitz(13828)

 Question 345511: f(x) = 11x - 5x2 + 4 find f(-4) The more I read how my lesson explains to solve this the more confused I get. If anyone can help explain it I would greatly appreciate it. Click here to see answer by mananth(12270)

 Question 345442: does x+8=y^2 define y as a function of x? Click here to see answer by Fombitz(13828)

 Question 345735: THe perimeter of a rectangle is 210 meters . How do i express the area as a function of the length, and how do I state the domain of the function. THis is what I have so far A=L*W A=X(105-X) 210/2=105 domain is 0 Click here to see answer by solver91311(16877)

 Question 345758: Find the indicated outputs forf(x)=2x^2 -5x f(0)= f(-1)= f(2)= Thanks Tammy Click here to see answer by solver91311(16877)

 Question 346009: find the inverse of following functions: (a) f(x)=(x^3 + 5)/(x-3) , x≠3 (b)f(x)=(x^3 - 8)/(x^2 - 4) , x≠±2 Click here to see answer by jsmallt9(3296)

 Question 346186: what is the domain for the following functions : (11x+3)/(x-7) sqr(8x^2) +12 5(x-1)^5/2 Click here to see answer by Fombitz(13828)

 Question 346271: let g be the function defined by the equation below g(x) = -x^2+6x find the following : g(a+h) g(-a) g(sqr(a)) a+g(a) 1/g(a) Click here to see answer by nyc_function(2733)

 Question 346562: Use the following table to …nd the slope and y-intercept of the graph of g: Explain your reasoning. x -2 0 3 7 g(x) 3 1 -2 -6 Click here to see answer by Fombitz(13828)