Write a function rule for the area of a rectangle whose length is 10 ft more than its width. What is the area of the rectangle when its width is 12 ft?

Summary statistics given for independent simple random samples from two populations. use the pooled t-interval procedure to obtain specified confidence interval. x1=71.6, s1=3.9, n1=11, x2=67.9, s2=3.4, n2=9 determine a 99% confidence level.