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Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

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

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5