Solve the system by graphing. If the solution does not appear to be a lattice point, estimate the solution to the nearest tenth (indicate that your solution is an estimate). 
Definitions:
United National Coarse
A thread specification for bolts, screws, and nuts that specifies a standard coarse pitch for screw threads, commonly used in the United States.
UNC
Unified National Coarse, a standardized thread designation used in the United States for bolts, screws, and nuts with a coarse thread pitch.
Woodruff Key
A Woodruff key is a semi-circular shaped, removable key that fits into a circular recess in a shaft, allowing it to engage with a corresponding slot in a mating part to prevent relative rotation while permitting axial movement.
Semi-Permanent
A state or condition that is intended to last for a long time but not forever, often applied to structures or installations.
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