A skydiver jumps from a plane at 12,500 ft. She free falls for 30 sec. and drops to 4,608 ft. After the parachute is pulled, the skydiver descends at the rate of 960 ft/ min. What is the total time of the jump

The answer is 41.7 because 1.39 times 30 is 41.7

This law is sometimes called the grouping property. as you can see, regardless of how the numbers are grouped, the answer is still 13. the associative law of multiplication is similar to the same law for addition. it says that no matter how you group numbers you are multiplying together, you will get the same answer.