The sum of max's age (x) and his sister's age (y) is 8

Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

What is the solution of the systems of equations? y=2/3x+3 x=-2

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles