Which pair of expressions are equivalent? 3v + 5 - 9v + 2 and negative 6v + 6

Negative 6n + 3 - 2n + 2 and negative 8 n + 6

Negative 4n + 8 + 9n - 2 and 5n + 6

10n - 5 - 2n + 3 and 5n - 2

whoever answers this gets 50pts pls hurry

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

Find the maximum value of p= 4x + 5y subject to the following constraints :