Can someone me with the circled questions and provide step by step for each question.

What is the equation of the graph below? y=sec(x)-4

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.