Marcia works 9 more hours than ivana. marcia and ivana work at a haunted house. each girl earns 7.50 per hour. the total earned by marcia and ivana eacg week is 217.50. how many hours did marcia work?

Brady has a 20 year fixed rate mortgage for $215,500 with monthly payments of 1,305.89.the annual interest rate is 4%. what is the total cost of the principal and interest for this loan rounded to the nearest dollar

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

Paul can type 60 words per minute and jennifer can type 80 words per minutes.how does paul's typing speed compare to jennifer's