Please help me on the Topic 10 Assessment!5 questions (30 points)

Which expression is equivalent to 2x^2+7x+4?

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

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.