What is the range for this data set?
37 years
9 years
41 years

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.

Amotorboat maintained a constant speed of 12 miles per hour relative to the water in going 45 miles upstream and then returning. the total time for the trip was 8.0 hours. use this information to find the speed of the current.