You should have written like this
1 hour /16 = x hour /100
x=100/16=25/4=6.25
but it asks how many hours after first hour
6.25-1=5.25
Since she is rolling 1 six sided dice the chances of her rolling a 3 are 1:6 because, she is trying to land on 3 not 3 numbers.
A cereal box is an example of a rectangular prism and a rectangle.
The answer is -2.76.
Hope I Helped (=^-^=)