90*/*per hour

Usually replies in 40 minutes

Algebra 1, Algebra 2, Geometry
| 9 other subjects

60*/*per hour

Usually replies in 3 hours

Algebra 1, Algebra 2, Geometry
| 10+ other subjects

40*/*per hour

Usually replies in 10 hours

Algebra 1, Algebra 2, Geometry
| 10+ other subjects