17. Louise was asked by her teacher to answer the problem "Two consecutive angles of a parallelogram have measures \( x + 30 \) \( ( x + 30 ) ^ { 0 } \) and \( ( 2 x - 60 ) ^ { 0 } . " \) If you were Louise, how will you solve for the value of \( x ? \) *
A. The equation to be used is \( x + 30 \) \( + 2 x - 60 = 180 \) . Combined similar terms. Then, solve for \( x \) using the properties of equality.
B. The equation to be used is \( x + 30 \) \( = 2 x - 60 \) . Then, solve for \( x \) using the properties of equality.
C. The equation to be used is \( x + 30 \) \( + 2 x - 60 = 90 \) . Combined similar terms. Then, solve for \( x \) using the properties of equality.
D. The equation to be used is\( - ( 2 x - 60 ) = 180 \) . Combined similar terms. Then, solve for \( x \) using the properties of equality.