Further mathematics
if the r=ai+bj+ck then |r| is*

Question 3 of 30 paul buys fruit to make smoothies. he buys 3.78 pounds of apples, 2.12 pounds of peaches, and 4.45 pounds of oranges. paul rounds each weight to the nearest tenth of a pound. about how many pounds of fruit did paul buy? (a) 10.5 pounds (b) 10.2 pounds (c) 10.4 pounds (d) 10.0 pounds 30 points

Answer this question! 30 points and brainliest! only if you know the answer.

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.