You plant two flowers in a garden. The equations y = 12.3x + 18 and y=6.1x +18 model the heights y of the flowers, in millimeters, after x days. What does the y-intercept of each equation represent? Will the flowers ever be the same height?

Which expression is equivalent to? assume x > 0 and y > 0.

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?

Landon wrote that 3−2.6=4. which statement about his answer is true?