exam Maths Puzzle Numerical Ability

solve each system of equations.

2x-y=2z=15
-x+y+z=3
3x-y+2z=18

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exam Other Question

Evaluate the functions for the values of x given as 1, 2, 4, 8, and 16. Describe the differences in the rate at which each function changes with increasing values of x.

2. f(x) = x2 - 3x + 2
The length of a rectangle is four less than three times the width. The area is 20 square centimeters. Find the dimensions of the rectangle.