hey, i'm trying to get a phone 8 but i don't have enough money. i'm trying to figure out how long it'll take me to get it. if you can tell me how long it'll take ill give you brainliest :) i need $177, i'm getting an allowance of $5 a week after march 5. i have $16 rn.

you would need to multiply each day by 5 so it would be it would take you 20 days to get 200 do it will take u less than 20 day:)

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.