Dr. Johnson is studying the effects of alcohol consumption on memory. He randomly assigns people to four groups. Three groups consume varying amounts of alcohol, and one group is given only soft drinks. This research design is called a(n) .

Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ? a) 10n= 2.0n b) 10+n=.20n c) n+ .20n=10 d) 10n=0.20n

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online