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How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

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.