Worth 20 points! answer asap! i will also give brainliest to whoever is correct!

what is the area of this trapezoid?

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|| units^2

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?