Jjodlask can you also help me with these questions

If f(x) = 5x + 4 and g(x) = x - 3, then

1. f(g(6)) = f(6 - 3) = f(3) = 5•3 + 4 = 19

2. g(f(-7)) = g(5•(-7) + 4) = g(-31) = -31 - 3 = -34

3. f(f(8)) = f(5•8 + 4) = f(44) = 5•44 + 4 = 224

4. g(f(x)) = g(5x + 4) = (5x + 4) - 3 = 5x + 1

{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