Is this graph a function or not a function

Measures of the angle of r, 31 s (x+4) t (3x+9)

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9

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.