How many positive integers less than 1,000,000 have exactly one digit equal to 9 and have a sum of digits equal to 13

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Construct the graph that models the given situation