Can someone explain this?
manu determines the roots of a polynomial equation p(x)=0 by applying the theorems he knows. he organizes the results of these theorems. (see attachment)

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola

The bottom of ignacio's desktop is 74.5cm from the floor. ignacio's sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk

Melody received $140 at the end of a certain week. how many customers did she advise that week?