Please answer this to the best of your ability

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

Write the equation in logarithmic form m^x=n

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.