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(2x+1)(x+4) 2x²+8x+x+4 2x²+9x+4

We need to solve this inequality to find the value that x could be greater or less than. First, we need to find the smallest positive x value, which is 3x. Then, we minus 3x from both sides, so only one s...

1/4

Amount of paint needed:

White paint = (18 ÷ 5) × 3 = 10.8 litres

Blue paint = (18 ÷ 5) × 2 = 7.2 litres 

Cost of white paint = 10.8 x £2.80 = £30.24

Cost of blue paint = 7.2 x ...

Information from question

Initial population: 170

Increase: 3% (=x1.03)

Years: 5

Method

Formula: initial...