Arlene buys a phone case and charging cord for 15\% off. The original cost of the phone case is $18. Her total discount is \$4.20 , Write and solve an equation to find the original price of the charging cord, r. Enter the correct answers in the boxes.

Consider the system: y = 3x + 5 y = ax + b what values for a and b make the system inconsistent? what values for a and b make the system consistent and dependent? explain

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field