The first three terms of a geometric sequence are shown below. x+3, -2x^2 - 6x, 4x^3 + 12x^2,...
What is the eighth term of the sequence?

A• -128x^8 - 384x^7
B• 128x^8 + 384x^7
C• 256x^9 + 768x^6
D• -256x^9 - 768x^8​

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists