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surryyy
 one year ago
Determine the domain of the function f(x) = 2x  4 when the range is {0, 12, 20}.
{2, 8, 12}
{0, 12, 20}
{4, 16, 24}
none of these
surryyy
 one year ago
Determine the domain of the function f(x) = 2x  4 when the range is {0, 12, 20}. {2, 8, 12} {0, 12, 20} {4, 16, 24} none of these

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Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2domain= x values range = y values

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2so substitute y for given set {0,12,20)one by one to find domain

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you need to solve for them and not guess

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2f(x) is same as y so \[\huge\rm y=2x4\] start with first number 0 substitute x for 0 what do you get ?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2\(\color{blue}{\text{Originally Posted by}}\) @Nnesha f(x) is same as y so \[\huge\rm y=2x4\] start with first number 0 substitute x for 0 what do you get ? \(\color{blue}{\text{End of Quote}}\) i meant substitute y**8

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no no no you do not substitute x for 0 you substitute f(x) to each the values in the range. you said it yourself y = f(x) range = y domain = x so, \(f(x) = 2x  4 \) means solve for x for each of the following: \(0 = 2x4 \) \(12 = 2x4 \) \(20 = 2x4 \)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0if you do not know how to solve for x, then you have no business taking the course.

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2\(\color{blue}{\text{Originally Posted by}}\) @Nnesha \(\color{blue}{\text{Originally Posted by}}\) @Nnesha f(x) is same as y so \[\huge\rm y=2x4\] start with first number 0 substitute x for 0 what do you get ? \(\color{blue}{\text{End of Quote}}\) i meant substitute y** \(\color{blue}{\text{End of Quote}}\) ^^^^^

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0how did you GET those values? CAN YOU SHOW YOUR SOLUTION FOR EACH?

surryyy
 one year ago
Best ResponseYou've already chosen the best response.10=2x−4 2x−4+4=0+4 2x=4 2x/2 = 4/2 x=2

surryyy
 one year ago
Best ResponseYou've already chosen the best response.112=2x4 2x−4+4=12+4 2x=16 2x/2 = 16/2 x=8

surryyy
 one year ago
Best ResponseYou've already chosen the best response.120=2x4 2x−4+4=20+4 2x=24 2x/2 = 24/2 x=12

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2PERFECT! great job!! :=)
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