45 points! Please help!
Can the formula S=A1/1-r be used to find the sum of all the terms of each sequence? Explain why or why not.
Sequence One: 5, 1, 1/5, 1/25,...
Sequence Two: 1/32, 1/16, 1/8, 1/4,...
Sequence Three:7, 14, 22, 28,...
Sequence Four:1, -3/2, 9/4, -27/8,...

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Which is f(5) for the function –2x2 + 2x - 3?