Im really struggling in algebra 2. Could anyone give me tips/ help on how to figure out imaginary numbers?... Example problem:
Find the sum of 3 - 7i and 8 + 4i.
A. 11 - 3 I
B. 22 - 8 I
C. 11 + 3 I
D. -22 + 8 i

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the plzzz write a proportion i will give you 100 points

Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?