Chelsea has 11 times as many art brushes as monique. if they have 60 art brushes altogether, how many brushes does chelsea have?

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read

An incoming airplane is x miles due north from the control tower at an airport. a second incoming airplane is y miles due east of the same control tower. the shortest distance between the two airplanes is z miles. which of the following functions would best model the situation above?