48hr

48*/*per hour

Usually replies in 3 hours

Mathematica
| 10+ other subjects

40hr

40*/*per hour

Usually replies in 2 hours

Mathematica
| 10+ other subjects

45hr

45*/*per hour

Usually replies in 3 hours

Mathematica
| 10+ other subjects

35hr

35*/*per hour

Usually replies in 17 hours

Mathematica
| 10+ other subjects