Simplify each expression. if not possible, write simplified.

1. 12a - a

2. 3x + 6x

3. 3x - 1

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor

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.