A survey was done to determine the effect of students changing answers while taking a multiple-choice test on which there is on
ly one correct answer for each question. Some students erase their initial choice and replace it with another. It turned out that 65% of the changes were from incorrect answers to correct and that 29% were from correct to incorrect. What percent of changes were from incorrect to incorrect?
Firstly, the best thing to do is add together the purchases. 164+22= 186 As she's then paid some of this off, you then need to subtract this amount 186-90= 96 Therefore, the current balance on Jennifer's credit card is $96 Hope this helps :)