Unit 3 Study Guide (Parallel & Perpendicular Lines)

Topic 5: Parallel, Perpendicular, or neither?!

For questions 22 - 25 , determine if the lines are parallel, perpendicular or neither.

22. 6x + 10y = 20 and 5x - 3y = 21

23. x - y = 4 and x + y = 9

24. x - 5y = 30 and 10y = 2x + 90

25. x = 5 and x = - 2

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x

Scott’s bank account showed a balance of $750 on sunday. during the next five days, he made one deposit of $140 and numerous withdrawals of $180 each. let x represent the number of withdrawals that scott made. write an inequality that can be used to find the maximum number of withdrawals that scott could have made and maintain a balance of at least $100. do not use a dollar sign ($) in your response.

Study results indicate that the mean length of time people spend on a bus in a city is between 21.2 min and 24.5 min what is the study margin of the error?