Arestaurant chain ordered 3940 pounds of rice in 20 pound bags. about how many 20 pound bag of rice did the chain order?

How to write 3 tenths and 5 tenths as a decimal

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)