What are the solutions of the equation 9x^4 – 2x^2 – 7 = 0? use u substitution to solve.

10 points? me . its important ‼️‼️

Suppose that 15 inches of wire cost 60 cents. at the same rate, how much (in cents) will 12 inches of wire cost

20 ! need ! which exponential function is represented by the table? f(x) = 0.2(0.5x)f(x) = 0.5(5x)f(x) = 0.5(0.2x)f(x) = 0.2(0.2x)