A radio station conducts a survey. They want to know if their listeners like a certain song. So
they announce on the air that listeners should
call one number on their phones if they like the
song and another number if they don't like it.
This is an example of:
A. A convenience sample
B. A self-selected sample
C. A systematic sample
D. A simple random sample

What is the slope of the line shown below?

Is a square always, sometimes, or never a parallelogram

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z