What is the value of (gof)(4)?
f(x)=4x-7; g(x)=x+3

what is the domain of (fog)(x)?
f(x)=2/x; g(x)=|x|-1

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

Ineed with number 6 , explain how to get 1978

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.