exam Maths Puzzle Numerical Ability

Graph f(x) = �2x + 4.

please help

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exam Other Question

Solve:

7 = 8
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x 3 There are 40 cows and chicken in the farmyard. One quiet afternoon, Jack counted and found that there were 100 legs in all. How many cows and chickens are there? Solve this problem by writing and solving an equation.