what is the value of the expression 3.0 x 10 to the power of 6 then 1.5 x 10 to the power of 4 the answers are 2.0 x 10 to the power of 2 2.0 x 10 to the power of 1 1.5 x 10 to the power of 2 1.5 x 10 to the power of 10