1. Evaluate 7m+2n-8p OVER n for m = –4, n = 2, and p = 1.5.
   
2. A mountain climber ascends a mountain to its peak. The peak is 14,090 ft above sea level. The climber then descends 490 ft to meet a fellow climber. Find the climber’s elevation above sea level after meeting the other climber.
   
3. Evaluate x(–y + z) for x = 3, y = 3, and z = 1.
   
4. Simplify the expression. 1.4 – 5.5 – 1.73 + 1.8 – 1.09