The mapping diagram shows a function. What could be a possible value for the
missing number n?
A7
C9
B8
D 15

Step-by-step explanation:

Numbers 7, 8 and 9 in the domain each already has an image in the co-domain (3, 1 and 1 respectively)

Since n has 2 as its image, n cannot be 7, 8 or 9. Therefore the best answer here is 15. (D)

answer: given that the roller coaster can accommodate 1600 riders per hour, thus the roller coaster can accomodate 1600 / 60 = 26.67 riders per minute.

given that there are 345 people in the line, the number of minutes it will take for the 345 persons to get into the roller coaster is given by 345 / 26.67 = 12.94 minutes.

therefore, it will take you 12.94 minutes to get to the front of the line.

step-by-step explanation:

rx and sx

step-by-step explanation: