How would i solve 2 yards* = x inches using proportions? i always struggle with proportions, i would be so if anyone could me figure this out. you sooo much!

Emma will roll two number cubes labeled 1 through 6. she will record the sum of the two numbers after each roll. she will roll the two cubes 540 times. how many times should emma expect the sum to equal 5?

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

What is x3+3x2−16x−48 divided by x−1?