Let g(x) be the reflection of f(x) = x2 +3 in the x-axis. what is the function rule for g(x)? a. g(x) = -x2 - 3 b. g(x) = -x2 + 3 c. g(x) = x2 - 3 d. g(x) = x2 + 3

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.