question number 9, graded assignment week2,

you asked me to give upto two decimal places for the answer, but did not asak me to round it off. will 37.48 be considered as right.
question6&7 graded assignment week2, in multiple choice questions, if even one or two options are wrong the marks for whole question are deducted?
question 11 graded assignment week2, its been said that marks are added for all cause the answer was wrong, marks were not added for me though it was correct.