In regular mathematics what is nine times nine

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

If angle ase measures 168 degrees, find the measure of angle dse. the figure mag not be drawn to scale

Alarger number is double the sum of a smaller number. the larger number is 2 less than 3 times the smaller number. if y represents the larger number and x represents the smaller number, which equations model the situation