MAP4C - Graphical Models Date:Chapter 5 Graphical Models -Assessment

MAP4C - Graphical Models Date: 2. Determine whether each graph is linear, quadratic or exponential. [K/U - 3 Marks] a ) [b) c) 3. A camera stores charge in a capacitor and then uses it to create light when a flash is needed. This table shows the charge left in the capacitor after the flash begins. Time (s) Charge (HC) a) Determine the exponential relation y = ab* that best fits the data using technology, where y is the charge left in the capacitor, in microcoulombs, 0.00 100 after x seconds. [APP - 3 Marks] 0.02 82 0.04 67 0.06 55 0.08 45 b) Use technology to determine the charge left in the capacitor after 0.05 seconds. [APP - 1 Mark] 0.10 37 4. Mike and Kim have a catering business. The amount they charge, C dollars, depends on the event and the number of people, n, being served. Lunch: C = 100 + 15n a) In each formula, which number represents the rate of change? Explain Appetizers: C = 100 + 8n how you know this. [COMM - 2 Marks] b) What do the rates of change represent in this real life scenario? [COMM - 1 Mark] c) What other information does each formula give? Explain. [COMM - 2 Marks]