Laptop specifications: • at least 3gb of memory • at least 250 gb hard drive • at least 14” screen • weigh at most 7 pounds • at least a 1 year manufacturer warranty • built-in wireless router • must be new, not used of refurbished spending limit: $800 • includes laptop, sales tax, and shipping • for the purpose of this project, use 7.5% sales tax

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?

What does x = in this equation x+3+2x=x+5

When y’all answer can y’all explain too !