1) Astrid has discovered a crater a certain number of steps away from the shuttle. The number has 3 digits. She says that, when this number is multiplied by 1000, the hundred thousands and the thousands digits
are the same. Also, the product of the number's digits is 16.
How many steps from the shuttle is the crater? Find both possibilities.

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

i'm sorry i don't know

step-by-step explanation:

answer: y=0 if that is what u r looking for