5. Which of the sets of ordered pairs satisfies an exponential equation? A. (1,2), (3,8), (5,32), (7,128)
B. (1,-2), (3,2), (5,6), (7,128
C. (1,1), (2,8), (3,27), (4,64)
D. (1,-1), (2,-4), (3,-9), (4.-16)

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

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.