To determine customer satisfaction with their service department, an automobile dealer randomly selects 20 hybrid-vehicle owners, 20 SUV owners, and 20 sedan owners and sends them a survey.

What type of sampling is used?

cluster

convenience
simple random

stratified

systematic

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be bale to prepare using the sauce?

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?

Math each whole number with a rational, exponential expression