Maths problem :
Please solve it is on the picture

Multiply. −2x(6x4−7x2+x−5) express the answer in standard form. enter your answer in the box.

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.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?