Erika needs a test average of 85 or higher to make the honor roll. There are four tests in the term.
Her first three test grades were 78, 80, and 88.
Which inequality could be used to find what she needs to score on her fourth test, x, in order
to make the honor roll?

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?