On the grid draw lines to show the region satisfied by the three inequalities.

If (a, b) is the solution to the system of equations shown above, and a and b are integers, then what is the value of a+b?

Hree steps to answering test questions correctly include a. underlining, repeating, reading c. reading, undoing, eliminating b. reading, underlining, erasing d. reading, underlining, eliminating

Did the universe cool off or get hotter as it expanded after the 'big bang"?