Emils backpack weighs 6 3/8 pounds. he removes a book that weighs 3/4 pound. then he removes a book that weighs 1/2 pound. his much does emils backpack weigh now?

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

Is this a polynomial function? i need to know asap

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work: