Which is the best estimate for written in scientific notation?

For this case we have the following multiplication:

We can rewrite the multiplication in the following way:

Then, by properties of powers we have:

In the multiplication if we have the same base, the exponents are added:

Finally, we multiply both numbers in the parenthesis on the left and add the exponents in the parenthesis on the right:

Rewriting the result as scientific notation correctly, we have:

The equivalent expression is given by:

option 1

step-by-step explanation:

the multiples of 15 are 15, 30,45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,   210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375,   390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, and 735.

the factors of 15 are 1, 3, 5, and 15.

hope that , fam!

-une, your fren : )