Veronica has $2.80, which consists of only quarters and nickels. if the number of quarters is half the number of nickels, how many coins does she have in total? select one: a. 18 b. 22 c. 24 d. 28

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

There is a spinner with 14 equal areas, numbered 1 through 14. if the spinner is spun one time, what is the probability that the result is a multiple of 2 or a multiple of 5?