exam Maths Puzzle Numerical Ability

When x is 2 or greater, the graph is the line y = x+4; when x is less than 2, the graph is the line y =3x.

Thank you to anyone who can help

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exam Other Question

what is the domain of the following equation?
3x-y=13

A. the set of all real numbers
B. 7/3
C. all positive real numbers
D. No real numbers Two jets leave Denver at 9 a.m. one flying east at a speed 50kmph greater than the other, which is traveling west. At 11 a.m. the plane are 2500 km. apart. Find their speeds.