Find the sum and express it in simplest form.
(-8a? - 7a) + (a' - a + 3)

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

Asingle die is rolled twice. find the probability of rolling a 3 the first time and a 2 the second time