Which coupon would you use on this chair: $20 off or 20% off. Why? Be as convincing as you can. *

1. kepler's three laws resulted from his careful analysis of data, and were not derived from a mathematical model. a. experimental b. hypothetical c. theoretical d. observational 2. which of the following was the earliest solar system model to exist? a. aristotelian b. heliocentric c. copernican d. ptolenmiac

Which of the following must happen in order for productivity to increase? a. production levels remain unchanged while inputs increase. b. production levels rise while inputs decrease. c. production levels fall while inputs increase.

When your working with the passage-based reading questions on the psat do all of the following except. a)make sure you read each question throughly. b) try to answer each question before you look at the answers. c) plan to spend most of your time reading the passage. d) make sure your answer choice is the most correct number me