Quick Questions 25% of $500 = Simplify: 3a – 2 (a + 4) x 36 =

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Presentation transcript:

Quick Questions 25% of $500 = Simplify: 3a – 2 (a + 4) 45 + 21 x 36 = Solve 5m – 3 = 87 Increase 1250mm by 10% 1) $125 2) 3 3)945+86 =1031 4) 30 5) 1000mm

Reading and Interpreting STEP GRAPHS

Step Graphs and Mobile Phones Step functions show the increase in a quantity of steps. For instance how parking fees are determined at Westfield Kotara. Step functions look like staircases.

Graphing Call Costs Fred wants to choose between Virgin prepaid $2 SIM only and Telstra $2 SIM only. The $30 prepaid cap plan charges for: 1. Virgin are $0.90 per minute with a $0.40 flagfall. 2. Telstra pre-paid charges are $0.85 per minute with a $0.42 flagfall. Time (mins) 1 2 3 4 5 6 7 8 9 Virgin Telstra

Create a Step Graph Using the table from the previous slide, create two step graphs, one for Virgin and one for Telstra. Exercise 14D page 482