65*/*per hour

Statistics, Probability
| 9 other subjects

35*/*per hour

Usually replies in 7 hours

Statistics, SAT Math, Probability
| 2 other subjects

60*/*per hour

Usually replies in 57 minutes

Algebra 1, Algebra 2, Geometry
| 10 other subjects

80*/*per hour

Usually replies in 2 hours

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