Abigail invested $77,000 in an account paying an interest rate of 8\tfrac{3}{8}8 8
3
​
% compounded annually. Gavin invested $77,000 in an account paying an interest rate of 8\tfrac{1}{8}8
8
1
​
% compounded monthly. After 14 years, how much more money would Gavin have in his account than Abigail, to the nearest dollar?

i dont know nkw

step-by-step explanation:

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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.

"exterior angles = 360 / number of sides.

60 = 360 / sides

sides = 360 / 60

sides = 6"