Substitution
Distance, Speed and Time
Formulas
Linear Functions
BAC
100
What is the value of
(a-b)/4
, if a =240 and b=56?
46
100
A car is travelling at 75 km/h.
How far will it travel in 2 hours and 30 minutes?
187.5 km
100
If A=P(1+r)^n , find A when P=$300 , r=0.12 and n=3 (give your answer to the nearest cent)
$421.48
100
Susan drew a graph of the height of a plant.
What is the gradient of the line?
m=5
100
Calculate the BAC of a male who consumed 4 standard drinks in 3.5 hours and weighs 68 kg, correct to two decimal places.
0.03
500
It is given that I=3/2MR^2 . What is the value of I when M=26.55 and R=3.07, correct to two decimal places?
375.35
500
The distance between Bricktown and Koala Creek is 75km. A person travels from Bricktown and Koala Creek at an average speed of 50 km/h.
How long does it take the person to complete the journey?
1 hour 30 minutes
500
Clark's formula is used to determine the dosage of medicine for children: 
For a particular medicine, the adult dosage is 325 mg and the correct dosage for a specific child is 90 mg.
How much does the child weigh, to the nearest kg?
19 kg
500
What is the slope of the line with equation 5x+2y-8=0 ?
slope =
-5/2
500
Caroline drinks two small bottles of wine over a 3 hour period. Each of these bottles contain 2.3 standard drinks. Caroline weighs 63 kg.
What is Caroline's BAC at the end of this period?
BAC= 0.081
1000
Solve the equation (5x+1)/3-4=5-7x
x=1
1000
A car takes 6 hours to complete a journey when travelling at 60 km/h.
How long would the same journey take if the car were travelling at 100 km/h?
3 hours 36 minutes
1000
Doris is driving in a school zone at a speed of 35 km/h and needs to stop immediately to avoid an accident.
It takes her 1.25 seconds to react and her braking distance is 5.3 metres.
Using the formula:
What is Doris's stopping distance? Give your answer to 1 decimal place.
17.5 metres
1000
What is the equation of the line?
y=3/2x+2
1000
Cameron weighs 75 kg. His BAC is zero when he began drinking. alcohol. At 9pm, after consuming 3 standard drinks, his BAC is 0.02.
Using the formula, estimate at what time Cameron began drinking alcohol, to the nearest minute.
6:22pm