exam Maths Puzzle Numerical Ability

Given f(x)= {2x-1 x<3
{-2 x>or=to3

Evaluate f(-1)
Evaluate f(3)
Evaluate f(5)

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exam Other Question

Evaluate the function at the specified value of the independent variable and simplify.

f(w)= w, w"squared"-2w, w"to the third power"-2w"squared", w"less than or equal to" -1, -1 Solve the following systems by substitution. Example 2 (p 712) and Example 4 (p 713) are the key models to go by for solving these exercises�.

16) 5x - 2y = -5
y - 5x = 3