Miguel bought 4 rolls for $5 how much would he pay for 18 rolls

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

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

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.