The length of a rectangle is 4 inches more than its width, and its perimeter is 34 inches. find the length and width of the rectangle.

if w = the width of the rectangle, then the length equals
w - 4
w + 4
4w

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?