Astack of ten musical disks is 1.15 cm tall. what is the average thickness of one disk? to the nearest whole number, how many disks will be in a stack that is 5 cm tall?

Answer the questions in the attachment. a rescue helicopter is at point a and a rescue boat is at point e. the helicopter pilot spots boats in distress at points d and c,with angles as marked in the diagram. figure abce is a rectangle. the altitude of the rescue helicopter, represented by ae, is 5000 feet.

Nell has a sales clerk job that pays $12 per hour for regular gas work hours. she gets double time for any hours over 40 that she works in a week. how many hours did nell work if her weekly pay was $744

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"