Acertain drug is made from only two ingredients: compound a and compound b. there are 5 milliliters of compound a used for every 7 milliliters of compound b. if a chemist wants to make 684 milliliters of the drug, how many milliliters of compound a are needed?

With this question, the answer with the red arrow is incorrect!

Abank manager wants to encourage new customers to open accounts with principals of at least $2 comma 500. he decides to make a poster advertising a simple interest rate of 3%. what must the principal be if the bank manager also wants to advertise that one can earn $10 the first month? can the poster correctly say, "open an account of $2 comma 500 and earn at least $10 interest in 1 month! "?

To increase her number of students, the instructor put a coupon in the local paper offering to waive the one-time fee for new students. what is the value of the coupon?