A plumber charges £40 for a call out, and an extra £18 for every hour. How long did a job that cost £130 take? The formula for this plumber's charge is: \(T = £60 + £20 \times h\) where \(T\) is the ...
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This clever learning trick makes math formulas impossible to forget
Struggling to remember maths formulas? Learn how the powerful memory palace technique helps students retain equations faster ...
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