1. [K2 A2] Simplify a) (3xy) 12p-2q-2 4 p-3,5 2. [K2 A2] Express as a single power, then evaluate a) (48) x (4-6) X -3 -2 -1 0 1 2 3 b) (3x) (35x6) 3. [KIAITICI] For the exponential function f(x) = 4* a) Complete the table of values f(x) b) Plot the points on the graph paper. Draw a smooth curve through the points. 4. [K3A3T3C3] You may know that air pressure decreases as altitude increases. So if you climb a tall mountain, you may feel out of breath because the air pressure at the top of the mountain is lower than at the base of the mountain. For this reason, people who climb Mount Everest need to bring along oxygen tanks. The equation p(a) = 100(0.9147). p(a) represents the air pressure, measured in kiloPascals (kPa), at an altitude a km. above sea level. a) Complete the following table for this function. Approximate values to one decimal place. Example: "2.34" is "2.3": "2.35" is "2.4": "2.36" is "2.4" a (km) p(a) (kPa) 0 4 8 12 16 20 24 b) Sketch the graph on the graph paper. c) Use the equation to determine the air pressure at the altitude for each location. 1km 1000m i) ii) Mount Logan, altitude 6050 m. Mount Everest, altitude 8848 m.