1- Distance and time vary directly when driving at a constant speed.Ingelaisdriving at a constant speed and travels 88kilometresin 1.8hours.How far does she travel at the same speed in3.3hours?Give your answer to the nearest kilometre.

2- A research scientist estimates that the human body contains51kilogramsof water for every 100 kilograms of body weight. At this rate, estimate the number of kilograms of water in a college student who weighs 104 kilograms. Give youranswercorrectto 1 decimal place.

3- The number of people working on a project and the amount of work completed vary directly,assuming thatall work at the same rate.If three painters can paint5motel rooms per day,how many painters are needed to paint15motel rooms per day?

4- If it takes 12 painters 48 days to completely paint the Sydney Harbour Bridge, how many days will it take 36 painters to paint the bridge?

5- Solve for x,giving your answer to thenearestwhole number.

a- 3 (x - 18 ) = 5 x.

b-What is the negative solution of the equation below?

x² +3x-54=0

c- What is the smaller root of the equation

6+6x-5=0? Give youranswer correctto3decimal places.

d- Find the positive root for(2x+1)(3x-6)=0correctto2decimal places.

6- The number of slaves required to build a pyramid is inversely proportional to the amount of time allowed to complete it. If it takes 33,504 slaves to build a pyramid in 18 years, how many slaves are needed to construct the same pyramid in 9 years?

7- What is the largest root of the equation

8+3x-4=0?

Give youranswer correctto3decimal places.

8-Each of the Space Shuttle's solid rocket motors burns 680,400 kilograms of propellant in 2.5 minutes. How much propellant does each motor burn in191seconds? Give answer to nearest kilogram.