Find the sum of the first five terms of the geometric series 8, -24,

a) 484
b) 488
c) 648
d)684

What is the volume of a rectangular prism that is 120 centimeters by 2 meters by 1.5 meters in cubic meters?

Math it's appreciated. (picture provided)

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )