Question

[FAN ANYONE THAT HELPS][LET ME POST THE EXPRESSION AND ANSWERS]Which shows the expression below simplified?

Answer 1

You can notate exponentiation by using this guy, "^".

Thus, 0.00024 + 2.8*10^6?

Let's see...

0.00024*10^0 + 2.8*10^6
0.000024*10^1 + 2.8*10^6
0.0000024*10^2 + 2.8*10^6
0.00000024*10^3 + 2.8*10^6

0.00000000024*10^6 + 2.8*10^6

Well, that's a little odd. Are you CERTAIN we have the right problem? Perhaps it was:

0.00024*10^0 + 2.8*10^-6
0.0024*10^-1 + 2.8*10^-6
0.024*10^-2 + 2.8*10^-6
0.24*10^-3 + 2.8*10^-6
2.4*10^-4 + 2.8*10^-6
24*10^-5 + 2.8*10^-6
240*10^-6 + 2.8*10^-6
242.8*10^-6
24.28*10^-5
2.428*10^-4

A REALLY want to mark A, but it's just not quite right, as written.

Just notice how the appearance or disappearance is directly related to the exponent on the 10. One-for-one!