Using a formula

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• A FS Tues 1100 - EL3 H & Sc
• B FS Tues 1100 - EL3 H & Sc
• A FS Weds 1100 - EL3 H & Sc
• B FS Weds 1100 - EL3 H & Sc
• A FS EL3 Thurs 0915 - Science

1. If p = 7, q = 2 and r =3. Evaluate ( calculate the value of) the following expression; 2p

2. If p = 7, q = 2 and r =3. Evaluate ( calculate the value of) the following expression; 5r - 1

3. If p = 7, q = 2 and r =3. Evaluate ( calculate the value of) the following expression; 3p + 8q

4. A mechanic tests the headlamps on a car. Each headlamp uses 100 watts of power. The voltage is 12 watts. The current used by each headlamp is:

• 0.12 amps
• 0.83 amps
• 1.2 amps
• 8.3 amps

5. The temperature in Sydney one morning is 104 degrees Farenheit. Convert this to degrees Celsius using this formula.

• 26
• 40
• 54
• 86

6. Read the text about body mass index. If someone weighs 65 kg and is 1.72 m tall. What is their BMI (to one decimal place)?

7. Find the simple interest on: $500 for 2 years a 6% pa.

8. Find the simple interest on: $1200 for 4 years at 6.5% pa