I need 2-4 please & show step by step explanation ( show the work ) please!

Y=4x^2+x-1 solve using quadratic formula

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

How do you write a paragraph proof to prove that the corresponding angles shown are congruent