1. What is an example of a real life problem that involves lines and planes? 2. Why would you sketch intersections of lines and planes?

2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?