10ac x 6ab x (-2abc) = ?

Find the solution of system of equation y= x-4 y=4x+2

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

Identify which functions are linear or non-linear. a. f(x) = x2 + 1 b. f(x) = 2x + 5 c. f(x) = x 2 + 3 d. f(x) = 3 x + 7 e. f(x) = 4x + 10 2 - 5