1. What is the solution of the system of equations
c + 3d = 8 and c = 4d – 6?
1) c=-14, d = -2
2) c= -2, d = 2
3) c= 2, d = 2
4) c = 14, d = -2
I

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

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Find the equation using the point (4,8)