Anna and tamara have four suitcases. anna's suitcases' weights are represented by x + 4 and 4x - 5. tamara's suitcases' weights are represented by -3x + 2 and 2x + 4. write an algebraic expression that represents the total weight of all the suitcases.

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.