A student has grades of 87, 94, 89, and 92 on four of the five unit tests in a course. Let x
represent the grade on the fifth test. This must be a whole number. An average, which can be a decimal,
of more than 90 is desired.
a) Using this information, write an inequality using x to represent the fifth test.
The student has a total of 362 points. He needs at least 450 total points.
How many points does the student need on the last test?