exam Maths Puzzle Numerical Ability

A taxi driver charges $2.00 for up to 1/2 mile, each additional ile is 70cents.
Graph fares and write the piecewise function for 0 to 4 miles. Discuss why this is a step function

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2. The break even values for a profit model are the values for which you earn $0 in profit. Use the equation you created in question one to solve P = 0, and find your break even values. seth is thinking of a number between 20 and 30. The number is prime and not more than 2 away from a perfect square. What is the number?