Answer:
See the attached picture for answer.
Step-by-step explanation:
ANSWER
The number of children between the ages of 9 and 15 who visited the park is

EXPLANATION
The number of children between the ages of 9 and 15 who visited the park are those within the age group 9 to 12 and 12 to 15.
We can from the graph that, the height of the bar that corresponds to the age group 9 to 12

and the height of the bar that corresponds to the age group 12 to 15

The sum of the two frequencies
The 9 songs selling for 0.99 each are 0.11
The 3 songs selling for 1.29 each are 0.43
6x0.11=0.66 + 1.29= 1.95 in total
Answer: Distance = 200 parsec
The Limit = 80 parsec to 320 parsec
Step-by-step explanation: Please find the attached file for the solution
I have to see if you can get it done before the first day of the shower