HELPPP PLEASE give points (10)

Five more than the product of a number n and 8 is at least 100. write an inequality that can be used to find all positive values of n

How can you construct perpendicular lines and prove theorems about perpendicular lines

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.