You can find the percent increase over the last number in each step by dividing the increase,
3, by the previous number:So the percent increase from n 8 to n 9 is 12%38 . D
You can use the formula to find the sum that an infinite geometric series
converges to, where a 1 is the first term and r is the ratio of one term to the previous term.
Here, a 1 = 2.8 and So the sum that this infinite series converges to is 11.2.39 . B
You will need an identity equation into which the expression can fit. One of the
half-angle identities is