Question

how to solve this with formulas

ko out of 1 RETTY Student Trans..ish Colum FOM 11 PRACTICEF eg question Which set of data is correct for the quadratic relation f = -x+20) + 147 Direction parabola opens Vertex Axis of Symmetry A upward (14, -20) **14 B downward (-20, 14) X-20 C. (14, 20) x = 14 D. downward (2014) X20 upward Select one: a. Set A b. Set D. c. Set C x d. Set B A company manufactures cylindrical planters. A town council wants planters with a wide rim for people to sit on. The company suggests that the area of the soil in the planter be about equal to the area of the rim. If the outer radius of the planter is 6.2 m, what is the radius of the soll? Select one: 306 MacR

Answer 1

llo f(x) = -(x+20)2 +14 ? 50 40 30 -20 (20,14) -10 + Tv - - (-23-7,9) -50-40-30-01100 + -- so 10 20 30 40 x' 1-10 -Lo - 30 .40 -50 vy' from the above graph we can see that (-20,14) is the vertes f & graph is downward parabola. and anis of symmetry is x=-20 " option (B) is correct. X=-20.