Is the sum of a positive number and a negative number always negative?

Find the nonpermissible replacement for binthis expression.b2/5b +5

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.

Given the equation −4  = 12, solve for x and identify if it is an extraneous solution.