Which is the rule for the sequence shown?
7.1, 6.7, 6.3, 5.9, . . .

f(x) = 0.4x + 7.1
f(x) = -0.4x + 7.5
f(x) = 7.1(-0.4)x
f(x)= 0.4(7.1x)

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)