Combine like terms: 12a + 26b -4b - 16a A 4a + 22b
B -28a + 30b
C -4a + 22b
D 28a + 30b

In a gallup poll, 750 randomly selected adults were asked whether they are in favor of the death penalty for a person convicted of murder, and 75% of them said that they were in favor. construct and interpret a 99% confidence interval of the percentage of all adults who are in favor of this death penalty. round to 2 decimals.