instruction:
In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
question:
Problem: a straight line in the xy - plane has y - intercept of 49 . on this line the x - coordinate of the point is 71 and y - coordinate is 12 then what is the slope of the line ? 
Options: a ) 0.5 , b ) 0.51 , c ) - 0.52 , d ) 0.31 , e ) - 0.49
answer:
c


question:
Problem: jacob is 39 years old . he is 3 times as old as his brother . how old will jacob be when he is twice as old ? 
Options: a ) 63 , b ) 64 , c ) 65 , d ) 76 , e ) 67
answer:
c


question:
Problem: what is the value of 3 x ^ 2 − 1.8 x + 0.3 for x = 0.6 ? 
Options: a ) − 0.3 , b ) 0 , c ) 0.3 , d ) 1.08 , e ) 2.46
answer:

c