7. Find all the real and/or imaginary zeros to each equation, and state the multiplicity if it is greater than 1. a) 23 + 7x2 + 16x + 12=0 b) 235 - 15x4 + 26x3 - 12x2 = 0 c) 6ac3 + 523 + 25x2 + 20x + 4 =0 8. Find all real solutions to the following equations. a) 20 - 1 = 30 b) 2 2 + 5x- = 12 c) V2x - 1 = Vx -1+1 d) (y -1)2 - (y - 1) = 2 9. Discuss the symmetry of the graph of each function. a) f(z) = 2x2 - 3x+ 9 b ) f ( 20 ) = - x2 - 1 c) f(20) = -324-2 10. Find the domain of each function. a) f(z ) = -4 b) - 4x+1 2x45 72 -x-6 C) x2 +1 11. Find the x - intercepts, y - intercept, and asymptotes for the graph of each function, then graph each function on graph paper. a) f(ac) = 2 2 - 20 - 2 b) f(z) = 23 - 3x3 + 4 c) f ( z ) =- 2 d) f(ac) = 2x2 7 2 - 4 e) f(ac) = +x