Which number is equal to 7(3.5 x 10to the 4th) written in scientific notation?

A.24.5 x 70to the 4th
B.2.45 x 10 to the 5th
C.24.5 x 10 to the 4th
D.1.05 x 10 to the 5th

I think it is B...?

3 answers

7*3.5 = 24.5, so you have 24.5*10^4

but scientific notaion requires a value less than 10, so you have to raise the power by one. (B)
Describe 2 polygons by the number of vertices and sides each has
Choice-f