exam Maths Puzzle Numerical Ability

Graph the function.
16)
f(x) =
4x + 2 if x < -2
x if -2 &#8804; x &#8804; 3
3x-1 if x > 3

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exam Other Question
solve the system using the substitution method. present as an ordered method. If not, specify whether the answer is no solution or infinite many solution
4x + y=4
2x + 8y=0 Jeff takes 5 hr longer to build a fence than it takes Bill. When they work together, it takes them 6 hours. How long would it take Bill to do the job alone?