Why might log10 19 be expressed in different ways

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?

The scatterplot below shows the number of hours that students read weekly and the number of hours that they spend on chores weekly. which statement about the scatterplot is true?