book Maths Puzzle Numerical Ability

Graph each equation. Label the vertex, focus and directrix

x^2-6x+10y=1

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book Other Question

-6k+9k^3+k^3+5k Jenny has 175 coins in a jar. They consist of nickels and dimes only. The total value of the 175 coins is $11.90. How many nickels and dimes are there in Jenny's jar?