Which of the following functions describes the sequence 4,-2,1,- 1/2, 1/4, . . .? A. f(1) = 4, f( n + 1) = -2f(n) for n>1

B. f(1) = 4, f( n + 1) = f(n) - 2 for n>1

C. f(1) = 4, f(n) = 1/2 f(n + 1) for n>1

D. f(1) = 4, f(n) = -1/2 f(n + 1) for n>1

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.

Solve the inequaliy: (x^2+2)(x−2)^2(6−2x)> 0

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?