exam Maths Puzzle Numerical Ability

anybody know this

3/5-3x<_1

thanks

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exam Other Question

Solve this equation.

sqrt x -1 = 3
Use the geometric sequence of numbers 1, 1/2, 1/4, 1/8,�to find the following:
a) What is r, the ratio between 2 consecutive terms?

Show work in this space.

b) Using