Asap! ! will give brainliest!

use sigma notation to represent the sum of the first six terms of the following sequence: 4, 12, 20, …

the summation from n equals 1 to 6 of negative 4 plus 8 times n
the summation from n equals 1 to 6 of 4 plus 8 times n
the summation from n equals 1 to 6 of negative 1 plus 8 times n
the summation from n equals 1 to 6 of 1 plus 8 times n

(if that is confusing, look at actual answer choices below)

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.

Find │7│. a. 1 over 7 b. –7 c. 7 asap i always mark brailiest who me so

What is the y-intercept of the line with the equation 3x + 4y = 12?