Two islands A and B are 5 km apart. Cierra took a vacation from island B and travelled 7 km to a third island C. At island B the angle separating island A and island C was 40°. While on this vacation she decided to visit island A. Calculate how far she will have to travel to get to island A from island C.

1. a^4+8a^3+24a^2+32a+16

2.y^8+8y^7+28y^6+56y^5+70y^4+56y^3+28y^2+8y+1

3.x^6-3x^4y^2+3x^2y^4-y^6

so part 1: the y values stay the same, but the x values are opposite signs.

part 2 & 3: the line will be of equal lengths and will be straight.

part 4: you'd see the same characteristic because the x coordinate becomes a negative making them at equal distances from the y axis?