Can someone help me with this one I am really confused with how it works:

-9x-x^2​

Which graph represents an even function?

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()