Help!!Which shows the expression below in simplified form?
(4 x 104) (9 10-4)
A.
3.6 x 102
B.
3.6 x 100
C.
3.6 x 101
D.
13 x 100

Ineed if you could explain and give me the answer you! this needs done

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?