Answer
a) 0.00036
b) 35.83
c) 22.5
Work Step by Step
a )Zeroes before significant figures in a number less than zero are insignificant. 5 rounds up, so the previous 5 becomes a 6.
b) 4 does not round up, so the previous 3 remains.
c) 5 rounds up, so the previous 4 becomes a 5.