exam Maths Puzzle Numerical Ability

(1/5)X^3+X^2-X-5

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exam Other Question

Match the graph with its equation.
The graph goes from the bottom row 4 to y 0 and curves back down to the 3rd row.

These are the equations:
a) y = -x^2 - 1
b) y = -x^2 + x Light travels approximately 5.87 x 10^12 mi. in one year. This distance is called a light-year. Suppose a star is 2 x 10^4 light-years away. How many miles away is the star?