Susannah has a high-yield savings account into which she deposits $120 each month. at the beginning of the year, susannah's account balance is $800. in the equation below, x represents the amount of time, and y represents susannah's account balance. y = $120x + $800 not including interest, what will her account balance be at the end of the year? a. $2,240 b. $2,300 c. $2,000 d. $1,440

A - $2240

Step-by-step explanation:

120(12) + 800 =

1440 + 800 = 2240

its c or d   take a lucky guess my dude

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.