3)

Domain. The domain of 86 Vx+9 g(x) = 9x2 - 72x + 108 can be written: O None of the other answers O (-00,6) U (6,9) U (9,00) O [-2,6) U (6,co) O [-9,2) U (2,6) U (6,00) O (-2,-6) U (-6,00) O [-2,9) U (9,00) O (-00,-9) U (-9,-6) U (-6,00) O [-00,-2) U (-2,00)6 Tangent Line. If p(x) = 5x~ + 3x* + + 4 Then the equation of the tangent line to the function p(x) at x = 1 is Oy = -4x + 14 Oy = -8x + 18 Oy = -8x O y = -8x + 22 O None of the other answers Oy = -4x O y = -4x + 22 O y = -8x + 26Flight of .3 Rocket. Suppose the altitude (in metres] of a rocket t seconds into ight is given by t) = 2r3 + 27:2 108t+ B4 The interval where t] is concave up is es) 0 (_m13) U (6: C02] 0 (ml (20} 0 none of the other answers