4. If water is pumped into the pool at a rate of 2 litres per second, how long would it take to fill the pool from empty? Give your answer in hours and minutes.
2 litres - 2000
to second in one mintis
Isecond-
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5. If the cost of the water is 0.1p per litre, calculate the weekly charge given these conditions.
The water must be completely changed twice per week for health reasons. Give your
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where's the diagrams?

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step-by-step explanation:

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)