Solve for x. Round all answers to the nearest tenth

Which two undefined geometric terms always describe figures with no beginning or end?

Vinny is interviewing for a job. he wants his take home pay to be at least $42,000.what is the least salary he can earn if he pays 25% income tax?

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.