book Maths Puzzle Numerical Ability

The cost of a taxi ride is calculated by adding a fixed amount to a charge for each 1/4 mile of the trip. If a one mile trip costs $4.00 and 1 and 1/2 mile trip cost $5.50 , what will be the costs of a 3 mile trip?

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book Other Question

Solve the quadratic equation by factoring and applying the property "ab=0 if and only if a=0 or b=0"

(x^2)+3kx-(10k^2)=0 Find the roots of the quadratic equations using the quadratic formula. Express the roots, if they are not rational, in the simplest radical form.

2x2 + 3x - 4 = 0