Alex scored 20% in his math test. if the test was out of 15, what was his score?

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+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

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points