Question 5 of 7 at the start of the week, you could run for 8 minutes. by the end of the week, you could run for 15 minutes. which proportion could you use to find the percent increase in your running time?

9/12 is the answer because 3/4 times 3 each is 9/12

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,