Toni and marcy partnered together in running laps around a track to raise money for the children's hospital's playroom. toni raised $20 plus $0.80 per lap that he ran. marcy raised $15 plus $0.85 per lap that she ran. toni swam 114114 times as many laps as marcy swam. together they raised a total of $257.00. let x represent the number of laps marcy swam
enter the simplified equation that represents the total number of laps toni and marcy swam in the first box and the amount of laps toni swam in the second box.
= 257

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.