Determine whether each of the following settings describes an observational study or an experiment...and then explain your reasoning. A veterinarian wants to see if a new diet food helps dogs to lose weight. She selects 10 golden retrievers in her practice and records their weights. Then she gives the dogs the new food for one month. She weighs the dogs again after one month and compares weights.

Add or subtract polynomial : –12qr? +13rq?

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?