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

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)