An arithmetic sequence has this recursive formula:
(a1 = 5
(a^n. = a^n-1 - 4
what is the explicit formula for this sequence?

a. a^n=(-4)+(n-1)5
b. a^n=5+(n-)
c. a^n=5+(n-)
d. a^n=(-1)+(n-)

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

∆red ≅ ∆ by rule will give brainiest if possible

John checked his watch and said that it is thursday, 7 am. what will the day and time be 2006 hours plzzz i will give you 100 points