PLEASE HELP WILL MARK BRAINLIEST HELP QUICK!!

An object in geometry with no width, length or height is a(n):

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details

The amount cami raised during last year’s charity walk, $45.50, is 7/10 of the amount she raised this year. which equation represents n, the number of dollars she raised this year?