Find the derivative of y=4sec^2 x

Plz which expression is equivalent to the expression below?

Lv beethoven software supplies customized software to a managed healthcare system. lv beethoven software's costs for the software is $1,723,000. lv beethoven software sells the software to the healthcare system for $3,816,981.10. overhead expenses are estimated at 47% of the selling price. what is lv beethoven software's net profit to the nearest dollar?

Are the corresponding angles congruent? explain why or why not.