Which of the following variables are valid? Give reasons for those which
are invalid

hope am right...

Explanation:

variables must not not contain any special characters i.e N%

Variables should only begin with a letter of the alphabet or a $ sign

answer; histogram;

hey there! :

mass = 5.75 g

volume = 7.5 cm³

therefore:

density = mass / volume

d = 5.75 / 7.5

d = 0.7 g/cm³

answer c

hope that !