If A = -3n + 2, and B = 5n - 7, what is the value of A + B, in simplest form? 2 n - 5
-8 n - 5
-3 n
2 n + 9

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

Henry's butcher shop uses an electronic scale that measures to 1/100 of a pound. which is the most accurate measurement based on the limitations of the scale that might be found on a package of meat sold by henry?

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.