Alex went out to dinner with her family. The cost of the meal came to $38.40. If they
leave a 15% tip, what will be the total amount
they will have to pay?
PLEASE SHOW WORK

Can someone answer this question? : )

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Match each function with its rate of growth or decay