kiswabutt413 kiswabutt413
  • 06-01-2023
  • Mathematics
contestada

9.
An engineer charges £20 plus £p per hour to repair central heating boilers.
At one house a repair takes 3 hours and costs £71.
(a)
(b)
(c)
Determine the value of p.
Write down a formula for the cost, £C, of a repair that takes x hours.
A repair costs £96.50. How long does it take?

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