MATH:( anyway A recipe calls for 3 2/3 cups of flour. Earl used 7 1/3 cups. By how much did he increase the recipe. I need this is algebraic form

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.

Icould really use some with this question.

What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2