exam Maths Puzzle Numerical Ability

please solve the system
y=4x+3
4y-20x=-8

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exam Other Question

Tutor could you help me please: A homeowner wants to fence a rectangular garden using 120 ft of fencing. The side of the garage will be used as one side of the rectangle. Find the dimensions for which the area is a maximum.

thank you which line is parallel to the line y=4x-2
a. 12x-4y=8
b. 4y-16x=10
c. 5y-25x=-10
d. -x+4y=-8