PLS SHOW WORK WILL GIVE BRAINLIEST Gianna buys a book for $12 and a poster for $15. Posters are on sale for 20% off. Sales tax is 9%. Which expression will calculate the cost of Gianna’s purchase?

A. 12 + 15 - 0.80 + 1.09
B. 12 + 15(0.80)(1.09)
C. (12 + 15)(0.80)(1.09)
D. (12 + 15 ● 0.80)(1.09)

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

#7. m is the midpoint of pq, the diameter of the circle o is 13in. and rm = 4in. find pm find pq