Saima is training for a bike race. On Saturday she rode her bike for 172 minutes on Sunday she rode for 153 minutes. How much longer did she ride her bike for on Saturday than on Sunday?

Find the slope of a line given the following two points

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?