I need help so plz

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Jack is considering a list of features and fees for current bank: jack plans on using network atms about 4 times per month. what would be jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements? a. $44 b. $104 c. $144 d. $176

Miguel has one foot of string. he cuts the string into fourths. how many inches is each piece of string?