The graph below shows how the height of a bamboo plant is changing over time. Which equation describes the relationship between x, the number of days, and y, the height of the plant in meters.
pick an
y=0.3x+2
y=0.3x+5
y=3x+2
y=3x+5

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.