6. Evaluate f(-1). 7. What value of a will make the equation f(a) = 6 true?

someone please help lol I have a test <3

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Solve the triangle. a = 21°, c = 105°, c = 5

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.