4) While mining, Fred found a large metal bar that contained 6 ounces of nickel. Fred also determined that the bar was 20% nickel. What was the total weight of the metal bar in
ounces? Round your answer to the nearest whole number if necessary.

Carter drank 15.75 gallons of water in 4 weeks. he drank the same amount of water each day.a. estimate how many gallons he drank in one day.b. estimate how many gallons he drank in one week.c. about how many days altogether will it take him to drink 20 gallons?

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

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?