Please answer fast will mark brainliest Evaluate r/2 + (7/8 - s)

when r=1 and s =1/2

OA) 7/8
OB)3/2
OC)15/8
OD)19/8

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Does the construction demonstrate how to copy an angle correctly using technology a) yes the distance between points a and f was used to create circle h b) yes the distance between points f and g was used to create circle h c) no the distance between points a and f was used to create circle h d) no the distance between points f and g was used to create circle h

Would greatly appreciate these 3 answers