For which function does f(4) = 10? f(x)=2(x+1)
f of x is equal to 2 times open paren x plus 1 close paren

f(x) = 3x−8
f(x) = 3x−8

f(x) = x2−7
f(x) = x2−7

f(x)=−x+12

9514 1404 393

  f(x) = 2(x+1)

Step-by-step explanation:

Try the choices and see:

  2(4 +1) = 2·5 = 10 . . . . first choice works

  3·4 -8 = 4 . . . . doesn't work

  4² -7 = 9 . . . . doesn't work

  -4 +12 = 8 . . . . doesn't work

The appropriate choice is ...

  f(x) = 2(x +1)

answer: i realy don't get it that much can you me figer it out pleas you

step-by-step explanation:

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1