Marcus paid 45 cents for 2 pencils. At that rate, what would 8 pencils cost?

What expression is equivalent to 42x-56y

The frequency table shows the results of a survey asking people how many hours they spend online per week. on a piece of paper, draw a histogram to represent the data. then determine which answer choice matches the histogram you drew. in order here is the.. hours online: 0-3, 4-7, 8-11, 12-15, and 16-19. frequency: 5, 8, 10, 8, 7 answer for the question is in the picture! : )

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!