15 points. .
simplify the expression. (this is a fractions, so "over" is the fraction bar.)
1. 5t ^ -1 over (10t²) (3t^0)
simplify the expression. (this is a fraction, so "over" is the fraction bar.
2. (2a) (6a²) over 4a³

1).             5 t⁻¹ / [ (10t²) (3t⁰) ] 

t⁻¹ means  1/t  and  t⁰ is ' 1 ',  so the expression becomes

                   5 / [ t (10t²) (3) ]  =

                   5 / [ 3t (10t²) ]  =

                   5 / 30t³  =

                   1 / 6 t³  or  (1/6) t⁻³

2).    (2a) (6a²) / 4a³

Clear the parentheses in the numerator:  2a 6a² = 12a³

So the fraction becomes      12a³ / 4a³

Divide top and bottom by  a³ :   12 / 4  =  just  3 .

11 mintues is the naswer