-0.75 is a rational number because it can be expressed as the fraction -3/4 and it is an integer
1: 2/5=emails 3.6hrs=emails, 3.6=2/5 5-2=3 3.6•3=__hours of work
2. 294+83=$__
3. 3•x=hw 64/4=__•3=__hrs on math
4. Idk sorry
Sorry if some of these are wrong but I'm pretty sure there right.
Divide 3600 by 6 and its 600