Question

Select all the expressions equivalent to 15m5−3(42−13m)−10
.
A:4(m−4)
B:4m−16
C:3(m−13)5
D:3(m−10)5
E:3m−125

Answer 1

assuming you meant
15m^5−3(42−13m)−10
then that's
15m^5 + 39m - 136

so all the choices are wrong.
I suspect yet another typo.